IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 7 November 2011 (all times are UTC)
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| 04:50 | <vagrantc> alkisg: http://packages.qa.debian.org/epoptes
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| 04:50 | <alkisg> Hey vagrantc. I saw it yesterday, cool!!! :)
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| 04:50 | * alkisg is finally home after 40 hours trip | |
| 04:51 | <alkisg> vagrantc: so now it automatically goes to testing after a couple of weeks?
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| 04:51 | Or it's manual?
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| 04:51 | <vagrantc> alkisg: i'd have to upload to unstable before it starts to migrate
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| 04:51 | <alkisg> Ah I forgot about unstable
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| 04:51 | <vagrantc> alkisg: i wanted it to land in experimental first, since it sounded like we're going to rearrange the VNC backend a bit
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| 04:52 | <alkisg> The next couple of days I'll work on epoptes a bit
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| 04:52 | And Phantomas will complete the classroom editing pane, afaik
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| 04:52 | <vagrantc> stgraber: so you could pull ltspfs and epoptes soonish
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| 04:52 | <alkisg> So that 0.4.0 version could go to unstable, yeah
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| 04:53 | vagrantc: about the vnc backend, if you could test if ssvncviewer works with 24bpp...
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| 04:53 | I'm not sure if I can create a vm with 24 bpp to test
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| 04:53 | I'm using vbox, you? qemu?
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| 04:54 | <vagrantc> alkisg: qemu or qemu-kvm
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| 04:54 | * vagrantc also tested spice support just now | |
| 04:54 | <alkisg> Test == ssvncviewer -listen on one hand, x11vnc -noshm -connect server on the other hand
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| 04:54 | <vagrantc> apparently, the server-side spice protocol only works with 64-bit
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| 04:55 | <alkisg> So spice is basically something like nx?
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| 04:55 | Screen, sound, printer and disk redirection?
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| 04:55 | <vagrantc> think so
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| 04:55 | would be cool to make a backend for ldm
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| 04:56 | <alkisg> I hope they make spice easy to install...
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| 04:56 | * alkisg wonders if we'll be switching to lightdm in the next months/years | |
| 04:56 | <alkisg> libpamssh + lightdm, instead of ldm
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| 04:57 | <vagrantc> wouldn't that only work for fat clients?
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| 04:57 | <alkisg> As I understood Scotty, we could put any session there
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| 04:57 | Thin, fat, rdesktop, nx...
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| 04:57 | <vagrantc> ah, by dropping a desktop file...
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| 04:58 | <alkisg> For thins it would execute commands through the already established socket
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| 04:59 | <vagrantc> you'd have a "ssh -Y -M ... startlxde" as a desktop file or something
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| 04:59 | <alkisg> Right, one of our scripts inside the thin-client-session.desktop
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| 05:00 | Btw xvnc4viewer is lighter in ram than ssvncviewer, so the switch would only be worth it if it avoids the 24bpp problems
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| 15:01 | <kazibOn_> Sorry. the server had to be rebooted.
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| 15:01 | cyberorg: Are you here?
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| 15:02 | Now I have 3 clients up and running, I'll add the 4th one.
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| 15:12 | <kazibOn_> cyberorg: Can you tell me which ports are exactly needed?
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| 15:12 | Currently I opened 22 and 20000 (for nbd)
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| 15:17 | <kazibOn_> Hi, I have a question on Auto-Login. When enabled (this works fine), I have a little problem: I cannot shutdown the client, because when I end the session, it automatically opens a new one.
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| 15:17 | <Cypherrr> !оп
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| 15:17 | <ltsp> Cypherrr: Error: "оп" is not a valid command.
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| 15:17 | <Cypherrr> !op
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| 15:17 | <ltsp> Cypherrr: Error: You don't have the #ltsp,op capability. If you think that you should have this capability, be sure that you are identified before trying again. The 'whoami' command can tell you if you're identified.
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| 15:18 | <kazibOn_> How do I correctly shot off then? I want Autologin to ensure that not two identical user-logins happen.
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| 16:28 | <txor> Hi, I am seeking for the way to serve different images for different thin clients on a LTSP server. Any hints?
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| 16:30 | <vagrantc> txor: distro and release?
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| 16:30 | <txor> vagrantc: It's an LTSP5 on an opensuse 11.4
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| 16:31 | <vagrantc> txor: well, i'm not familiar with opensuse's kiwi-ltsp implementation, but you'd probably start by configuring dhcpd.conf
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| 16:31 | <knipwim> i would say as well, configure it in the pxe server
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| 16:32 | <vagrantc> kiwi-ltsp is a bit different from most LTSP implementations, but maybe cyberorg could help
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| 16:32 | <txor> vagrantc: I see, this is usually done on the DHCP server? There's not a way with LTSP config files (like lts.conf)?
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| 16:32 | <vagrantc> txor: lts.conf is loaded after the image is already determined
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| 16:33 | <txor> I want to ask you befor starting to hack arround.. ;D
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| 16:33 | yes
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| 16:33 | <vagrantc> txor: so how can you tell it which image to load?
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| 16:33 | <txor> configuring the TFPT and DHCP would be the way
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| 16:33 | yes
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| 16:33 | <vagrantc> right
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| 16:34 | <txor> ok, that is the info I was searching for... Thank you very much!!
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| 16:34 | <vagrantc> txor: knipwim's suggestion of tweaking the pxelinux.cfg would also likely be an option
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| 16:34 | <txor> yes, I'll start looking in PXE and DHCP services
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| 16:35 | Thanks you ppl! See you soon! :)
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| 16:35 | <mgariepy> txor, i would create some tftp/pxe config for my images and would symlink the specific thin client
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| 16:35 | <alkisg> txor: do you mean kernel + initrd, or the nbd disk image?
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| 16:36 | <mgariepy> like 01-AA-BB-CC-DD-EE-FF > my_pxe_config
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| 16:37 | <xsl> anyone knows an image that shows all services and processes involved on a LTSP client connecting to an LTSP server?
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| 16:37 | <txor> alkisg: I think it's the net image
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| 16:38 | I need to have two images and serve one by default and the other to defnied thin clients
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| 16:38 | <vagrantc> xsl: ssh, NBD or NFS, ldminfod, tftp, dhcp ... i think that almost covers it
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| 16:38 | xsl: ltspfs may use a special port
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| 16:39 | <xsl> tyvm
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| 16:39 | and the distro that better supports it .. ubuntu.. right?
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| 16:43 | <vagrantc> xsl: ubuntu and debian have good LTSP support ... the others i'm not sure of
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| 16:43 | <xsl> tyvm for your feedback
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| 16:44 | * vagrantc suspects the topic in the channel need be updated | |
| 16:45 | <knipwim> Gentoo is still getting very close I think :)
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| 16:45 | <vagrantc> heh :)
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| 16:46 | fedora sort of fell behind a bit
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| 16:46 | <miks> Hey everyone! Anyone have any ideas on my video resolution problems?
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| 16:47 | <vagrantc> miks: i was going to look into the code for some of what you needed and then you disappeared :P
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| 16:47 | <knipwim> i did see warren making some fedora changes a while ago
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| 16:47 | <miks> Sorry Vagrant
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| 16:47 | It's been a rough week :-)
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| 16:48 | I was able to use XRANDR on the client, but I can't figure out how to get it into LTS.conf
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| 16:48 | <pingufan> Hello, cyberorg. You helped me when I was fixing the problem with 3rd+4th client ~ 2 hours ago.
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| 16:48 | <vagrantc> knipwim: but they didn't get uploaded to fedora ... ?!
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| 16:48 | <pingufan> I have a question: Does kiwi-ltsp uninstall yast2-bootloader? I was not on the system any more!
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| 16:48 | <vagrantc> miks: you might be using features not yet implemented in LTSP ... what were the commandline options you used again?
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| 16:48 | <miks> xrandr --newmode "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync
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| 16:49 | xrandr --addmode VGA1 “1024x768_60.00”22:29xrandr --output VGA1 --mode 1024x768_60.00
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| 16:49 | oops, that last one was two commands
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| 16:49 | Should be: xrandr --addmode VGA1 “1024x768_60.00"
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| 16:50 | <vagrantc> miks: there's XRANDR_NEWMODE but i don't see any code for addmode
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| 16:50 | <pingufan> Meanwhile the four clients are running, but the whole system is not stable. I run now the server in runlevel 3 to exclude problems with graphics card.
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| 16:50 | <miks> I saw that too
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| 16:50 | I've tried disabling XRANDR and using X_MODE_0, but the clients are stuck at 800x600
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| 16:50 | No matter what I do, that's all i can get them to boot into
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| 16:50 | <vagrantc> miks: yeah, if you've got a solution with xrandr, better to fix the code to do what you want with xrandr :)
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| 16:51 | <miks> I agree.
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| 16:51 | But how do I get it to apply to the client, and persist after reboot
| |
| 16:51 | ?
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| 16:51 | <vagrantc> miks: do you have to do it as separate commands, or can you implement it all in one commandline?
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| 16:51 | <miks> I've only tried separately
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| 16:52 | Are you thinking of using a script to do it?
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| 16:52 | <vagrantc> miks: well, about to tell you where to put a script to do it :)
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| 16:52 | <miks> That would work
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| 16:52 | I've never used a script in LTSP
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| 16:52 | So you'll have to explain how I implement it, but I can see the possibilities!
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| 16:53 | <vagrantc> miks: so, in /opt/ltsp/i386/usr/share/ltsp/xinitrc.d/ you should see a bunch of scripts
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| 16:54 | <alkisg> miks: did you try setting X_HORZSYNC / X_VERTREFRESH in your lts.conf, without specifying any other X* options?
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| 16:54 | <miks> alksig: No I didn't
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| 16:54 | <alkisg> I don't see why --newmode should be needed for 1024x768...
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| 16:54 | <vagrantc> miks: you could drop another that runs after the xrandr one that does what you want
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| 16:54 | <miks> Vagrant: I'm booting up my VM now to look
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| 16:55 | <vagrantc> yeah, 1024x768 seems pretty conventional ... but if xrandr works ...
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| 16:55 | don't see why we shouldn't get the code to allow it
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| 16:56 | then again, i don't know much about xrandr :)
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| 16:56 | <miks> Okay, I see the folder with the scripts
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| 16:56 | So I stick the xrandr commands that worked into a file, make it executable, and stick in here basically?
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| 16:57 | Oh, and how do I get that script to only apply to certain machines?
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| 16:58 | <vagrantc> miks: put it in a conditional with an lts.conf variable ... you can just make one up :)
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| 16:59 | <miks> Can you give me an axample Vagrant?
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| 16:59 | <alkisg> [mac:address]
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| 16:59 | MIKS_VARIABLE=True
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| 16:59 | ...and then in the script, if [ -n "MIKS_VARIABLE" ]... => that only applies to the clients specified in lts.conf
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| 16:59 | <miks> Ah
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| 17:00 | I may be over my head here, but I'll try it
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| 17:00 | <vagrantc> gah. use boolean_is_true :P
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| 17:01 | miks: what XRANDR variables did you already try?
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| 17:01 | <pscheie> Silly ubuntu question: the upstream (non-tc) nic is up only if someone is logged in at the console.
| |
| 17:01 | How do I make it stay up all the time?
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| 17:01 | <miks> xrandr --newmode "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync
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| 17:02 | <pscheie> Ubuntu 10.4, btw
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| 17:02 | <miks> xrandr --addmode VGA1 “1024x768_60.00”
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| 17:02 | xrandr --output VGA1 --mode 1024x768_60.00
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| 17:02 | Those are the 3 commands I ran on the thin client to increase resolution
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| 17:03 | <vagrantc> miks: no, i mean, did you try setting XRANDR_NEWMODE_0=1024x768 or some such?
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| 17:03 | in lts.conf
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| 17:03 | <miks> Oh yeah
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| 17:04 | <vagrantc> miks: these wouldn't happen to be connected using a KVM switch?
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| 17:04 | <miks> Not the one I was testing on
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| 17:04 | I was on the server via KVM switch
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| 17:04 | But that's it
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| 17:05 | I tried XRANDR_NEWMODE_01
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| 17:05 | <vagrantc> as long as the clients aren't connected via KVMs, you should be fine (i've seen problems with KVM switches with thin clients before)
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| 17:05 | <miks> XRANDR_MODE_01
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| 17:05 | <vagrantc> miks: try XRANDR_MODE_1
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| 17:05 | <miks> Okay
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| 17:05 | <vagrantc> miks: there was a bug in the docs that might have lead you astray
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| 17:05 | <miks> I can't try until I get back into the lab, this evening
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| 17:06 | <miks> But I can try it then
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| 17:06 | You think the mode number is throwing everything off?
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| 17:07 | I don't feel very confident in my ability to write a script
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| 17:07 | <alkisg> pscheie: you mean in standalone clients, not ltsp clients?
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| 17:07 | Are you using network manager?
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| 17:07 | <vagrantc> miks: XRANDR_MODE_01 does nothing ... not supported by the code
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| 17:08 | <pscheie> alkisg, no, I mean in my ltsp server
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| 17:08 | <miks> Pretty silly to have it in the documentation then :-)
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| 17:08 | I was getting all this from http://manpages.ubuntu.com/manpages/lucid/man5/lts.conf.5.html
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| 17:08 | <vagrantc> miks: well, it was fixed in newer versions
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| 17:08 | <alkisg> pscheie: ok, are you using network manager to bring up the interface?
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| 17:08 | <miks> Ah
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| 17:08 | <alkisg> Or /etc/network/interfaces?
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| 17:09 | <vagrantc> miks: but ubuntu might still be carrying the old version ... it was fixed in 0.99+bzr106
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| 17:09 | <pscheie> alkisg, I think NM
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| 17:09 | I'm not at the server ATM.
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| 17:09 | <alkisg> pscheie: ok, you need to create a "system" connection as opposed to a "user" connection
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| 17:09 | <miks> It looks different here: http://manpages.ubuntu.com/manpages/natty/man5/lts.conf.5.html
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| 17:09 | Looks like XRANDR_MODE_0
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| 17:09 | I think i tried that, but I can't be certain
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| 17:09 | <alkisg> The user connections go in ~/, while system connections go in /etc/NetworkManager/system-connections
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| 17:09 | <miks> I'll do some more trying tonight
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| 17:10 | <dberkholz> knipwim, vagrantc: there's people actually using gentoo, so it must be doing alright
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| 17:10 | <alkisg> pscheie: that corresponds to the checkbox [x] allow all users to use this connection" in the network manager settings dialog
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| 17:10 | <vagrantc> dberkholz: yay!
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| 17:10 | <miks> If it doesn't work tonight, I may need some help getting the script in place...
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| 17:13 | <pscheie> alkisg, ok, tx. I'll have to check it tonight; it doesn't seem to respond to my attempts to ssh to it.
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| 17:13 | <alkisg> ok
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| 17:14 | <miks> On the thin client I had to do XRANDR --NEWMODE followed by XRANDR --ADDMODE, but I don't see an "ADDMODE" option in LTS (as you mentioned ealier Vagrant)
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| 17:14 | <pscheie> alkisg, btw, are you back home?
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| 17:14 | <alkisg> Yup, finally, after a 40h trip :-/
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| 17:14 | <pscheie> ugh!
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| 17:14 | <alkisg> But I got to see Zurich, so no problem :D
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| 17:15 | <pscheie> that's cool.
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| 17:15 | <miks> So how would that work in lts.conf? Do i just need the XRANDR_NEWMODE_0 and then XRANDR_MODE_0 ?
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| 17:15 | <pingufan> How can I reboot a client from the host side, please?
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| 17:16 | <alkisg> miks, can you put your client Xorg.0.log to pastebin/
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| 17:16 | ?
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| 17:16 | pingufan: distro/version?
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| 17:16 | <pingufan> openSuse 11.4, with kiwi-ltsp
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| 17:16 | <alkisg> Sorry, no idea.
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| 17:16 | <pingufan> with pre-built image
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| 17:17 | <miks> alksig: I'm not in the lab now, but I could later
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| 17:17 | <pingufan> does ssh work by default, or does that need special setup?
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| 17:17 | <miks> From the thin client I just open up that log and past it all, right?
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| 17:17 | <alkisg> miks: ok. Btw you can use <tab> for name autocompletion
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| 17:17 | miks: you need to get local access to the thin client
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| 17:17 | <vagrantc> miks: i'm hoping you don't even have to mess with ADDMODE, just by specifying the right avariables ananems :)
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| 17:17 | <alkisg> !localxterm
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| 17:17 | <ltsp> alkisg: localxterm: Any applications that you launch on a thin client actually run on the server. However, if in a client you run 'ltsp-localapps xterm', a local xterm will open, and any commands that you enter there will be executed locally on the client.
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| 17:18 | <alkisg> Something like that ^
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| 17:18 | <miks> Thanks! (I realize i keep hitting the s and i backwards in your name, sorry :-)
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| 17:19 | <pingufan> ltsp: Thank you. So I assume that local apps must be enabled from server's side, PLUS this special prefix has to be used?
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| 17:20 | Or can I always use this prefix?
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| 17:20 | <miks> alkisg: I was using local xterm to do the Xrandr
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| 17:21 | <alkisg> pingufan: ltsp is a bot, a helper program that allows us to keep notes
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| 17:21 | <pingufan> Ah.
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| 17:21 | <alkisg> pingufan: and I told it to send a note to miks
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| 17:21 | <miks> so you're saying I need to use local xterm to browse to the log?
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| 17:21 | <alkisg> So that answer wasn't directed at you
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| 17:21 | <alkisg> miks: yes
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| 17:21 | <miks> Got it
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| 17:22 | <miks> Well I've got some homework tonight, I'll see what ui can accomplish and no-doubt see you all tomorrow with results!
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| 17:22 | <alkisg> miks: also, in a second reboot, try these in your lts.conf: X_HORZSYNC=33-88, X_VERTREFRESH=33-71 (two separate lines)
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| 17:22 | <miks> Okay
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| 17:22 | <alkisg> Because I find it difficult to believe that 1024x768 isn't there
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| 17:22 | <miks> Will do
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| 17:22 | I agree
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| 17:22 | <pingufan> What does the option CONFIGURE_X=True do ?
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| 17:23 | <miks> When running XRANDR in a local xterm, it only showed 800x600
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| 17:23 | <alkisg> miks: e.g. one reason may be that the monitor timings are not autodetected
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| 17:24 | pingufan: that option was used in the past to tell ltsp to create a customized xorg.conf. After a while it was no longer needed, as the xorg.conf was automatically generated when it was needed. Not sure how opensuse used it.
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| 17:25 | So CONFIGURE_X=True shouldn't ever be needed in any recent installations
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| 17:26 | <miks> alkisg: So how do I make it detect properly?
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| 17:27 | <alkisg> miks: *if* that is the problem, then: (07:22:16 μμ) alkisg: miks: also, in a second reboot, try these in your lts.conf: X_HORZSYNC=33-88, X_VERTREFRESH=33-71 (two separate lines)
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| 17:27 | <miks> Oh so that will address it?
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| 17:28 | <alkisg> *if* that is the problem, yes, that manually tells the timings to xorg
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| 17:28 | <miks> Awesome
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| 17:28 | Thanks so much, I'll give this all a try tonight!
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| 17:28 | This lab has NOT been good for my blood pressure
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| 17:28 | <pingufan> I see. You possibly can tell me how to do: The clients have 16:9 LCDs attached. Their resolution is not optimal, and the graphics mode I hand over does not match correctly. I tried to pass over vga=ask to see the possible modes, but there is no correct one showing up. What is usual in such cases? Tne Mainboard is a AsRock PV350 with some VIA chipset on it.
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| 17:29 | PV530-ITX Mainboard, I meant.
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| 17:29 | <alkisg> vga=ask is about setting the framebuffer mode, which shouldn't be used in xorg nor in recent kms cards
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| 17:30 | To see the client graphics card, the command is (locally): lspci -nn -k | grep -A 2 VGA
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| 17:30 | <alkisg> VIA has bad drivers though, that may be the problem...
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| 17:32 | <pingufan> I looked into the manual: VIA Chrome9 HD DX9 Graphics supports up to 2048x1536 @ 75 Hz
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| 17:34 | <alkisg> The pci id is more helpful usually
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| 17:34 | Also lspci tells you the driver in use
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| 17:35 | If that's openchrome, check the driver version, I think it's been unmaintained for a while, but got 2 maintainers recently, so you might want to try a really new version...
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| 17:36 | <vagrantc> lspci tells the driver in use?!
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| 17:37 | <pingufan> I have absolutely no idea how I get that info from the running client. It fires up KDE4 from/on the server.
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| 17:37 | But openchrome works on SuSE 11.4. If it is then also in the prebuilt image for the client - I don't know.
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| 17:39 | <alkisg> vagrantc: $ lspci -nn -k | grep -A 2 VGA
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| 17:39 | 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
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| 17:39 | Kernel driver in use: i915
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| 17:39 | Kernel modules: i915
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| 17:40 | <vagrantc> wow
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| 17:43 | <pingufan> Can 4 clients bring a server to a system load of 21 (still rising)?
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| 17:47 | <highvoltage> you can do that even without a client, depending on what you do.
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| 17:47 | <pingufan> I see only one firefox running.
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| 17:48 | It's now 46 - I am almost sure it will die soon.
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| 17:49 | <pingufan> 3GB RAM should be sufficient for 4 clients?
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| 17:50 | Ok, it died.
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| 17:51 | What can cause such a load? I am not there at the moment.
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| 17:54 | <highvoltage> pingufan: yep, it should be plenty
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| 17:54 | pingufan: you could run top or htop to see what's using most cpu or ram
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| 17:55 | <pingufan> Is there something I can do to stop this stupid students from oberloading the system?
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| 17:56 | <Gadi> are the clients crashing or the server?
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| 17:57 | <vagrantc> load of 21-40+ sounds like the server is crashing
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| 17:58 | <pingufan> It crashed.
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| 17:59 | They had to reset it. :/
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| 17:59 | <pingufan> Are this settings good, or shall I change something?
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| 17:59 | [default]
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| 18:00 | LDM_SERVER = 10.10.0.1
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| 18:00 | SERVER=10.10.0.1
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| 18:00 | LDM_LANGUAGE=de_DE
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| 18:00 | XKBLAYOUT=de
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| 18:00 | XKBVARIANT=nodeadkeys
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| 18:00 | SOUND=False
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| 18:00 | LOCALDEV=False
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| 18:00 | SCREEN_07=ldm
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| 18:00 | LOCAL_APPS=false
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| 18:00 | LDM_NOMAD=false
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| 18:00 | <vagrantc> !paste
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| 18:00 | <ltsp> vagrantc: paste: try !pastebot
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| 18:00 | <pingufan> TIMEZONE=GMT+1
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| 18:00 | TIMESERVER=10.10.0.1
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| 18:00 | I already disabled almost everything.
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| 18:00 | <vagrantc> !pastebot
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| 18:00 | <ltsp> vagrantc: pastebot: try !pastebin
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| 18:00 | <vagrantc> !pastebin
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| 18:00 | <ltsp> vagrantc: pastebin: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
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| 18:00 | <pingufan> Sorry
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| 18:01 | <vagrantc> pingufan: nothing in there should cause your server to crash like that
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| 18:01 | <pingufan> I think that they tried to play movies. Can this overcharge the server?
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| 18:01 | <vagrantc> pingufan: i'm not sure about kiwi-ltsp, but you shouldn't have to specify LDM_SERVER, SERVER or TIMESERVER, since they're all the same
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| 18:02 | <pingufan> But that cannot hurt at all?
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| 18:02 | <vagrantc> shouldn't, unless the information is wrong
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| 18:02 | <pingufan> Information is correct.
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| 18:03 | <vagrantc> multimedia might overload the server, although i'd usually expect the clients to crash before the server
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| 18:03 | <pingufan> Now the load is at 0.1
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| 18:04 | Can I set the client's NIC to 10 MBit?
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| 18:04 | <Gadi> you may want to use LDM_DIRECTX
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| 18:05 | ie (LDM_DIRECTX=True in lts.conf)
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| 18:05 | this will at least not pass the multimedia through ssh
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| 18:05 | <alkisg> You can also use pam_limits: http://manpages.ubuntu.com/limits.conf
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| 18:06 | <pingufan> Will this Will this help in example against youtube in firefox?
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| 18:06 | I don't think so.
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| 18:07 | I would like to have a way to reboot the clients from the server side. I could only watch how the system dies, without any possibility to do something against that. Any ideas?
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| 18:08 | Can I configure the clients to only run @ 10 MBit?
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| 18:09 | <alkisg> (08:06:22 μμ) pingufan: Will this Will this help in example against youtube in firefox? => if you limit client cpu usage, yes
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| 18:09 | Also, if your clients run at 1 mbps, and you have youtube open, you won't save any cpu
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| 18:09 | You'll just save bandwidth
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| 18:10 | <pingufan> But when bandwidth is too low, they cannot play movies. This reduces server load in turn?
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| 18:11 | Which ports are necessary to be open? I currently have firewall open from inside, this surely is not a good idea.
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| 18:12 | <pingufan> NDB uses port 20000, right?
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| 18:13 | <alkisg> pingufan: open a video in youtube. Minimize firefox. Tell me how much cpu you're using, and how much bandwidth a client would use in that case (hint: 0)
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| 18:13 | No, it used 2000 up until the newest versions
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| 18:14 | <pingufan> I am not there right now. I watch the system through ssh.
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| 18:14 | <alkisg> It was a rhetorical question
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| 18:14 | <pingufan> So which ports must I open on the LAN side to make it work?
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| 18:14 | <alkisg> What I meant was "No" in that: (08:10:44 μμ) pingufan: But when bandwidth is too low, they cannot play movies. This reduces server load in turn?
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| 18:14 | <pingufan> ssh, dhcp is clear, 2000 in addition?
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| 18:15 | Does every client use a separate port ?
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| 18:16 | Somewhere I read about 20000 - can't remember where.
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| 18:16 | And without this port open, the clients couldn't mount nbd.
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| 18:18 | It would be great to know if I can i.e. allow a window of ports only for nbd.
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| 18:22 | alkisg: So all clients use the same port, 2000 ?
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| 18:22 | <alkisg> pingufan: I've no idea how opensuse implemented ltsp
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| 18:22 | Usually yes, a port is enough for all clients
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| 18:22 | Why do you put a firewall in the ltsp-client side?
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| 18:23 | Or you're trying to do something else with the ports?
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| 18:23 | <pingufan> So I will close the firewall from inner side except ports ssh/dhcp/2000 and that sould be enough for the clients?
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| 18:24 | <alkisg> If you close the firewall from the inner side, why would you except some ports?
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| 18:24 | ssh, dhcp and nbd are not enough for the clients
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| 18:24 | They need X and probably lots moer
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| 18:24 | more
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| 18:24 | (depending on LDM_DIRECTX etc)
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| 18:25 | <pingufan> I have a whole WLAN and this 4 clients in the LAN. WLAN is controlled by squid. When I open everything, I get problems with bandwidth because then all laptops have direct Internet access.
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| 18:26 | As I run no local apps, I have to open more ports? I thought everything is tunneled through ssh ?
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| 18:27 | At least, this worked with 2 clients.
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| 18:27 | <alkisg> Don't you need tftp?
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| 18:27 | <pingufan> Sure. That is also open.
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| 18:28 | I am only unsure if ports are dedicated for every client or if they are the same for all clients.
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| 18:28 | <Gadi> with nbd, it is same for all
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| 18:29 | check either nbd-server's config file or inetd's config file to find out which is used
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| 18:29 | <pingufan> Ok. So ports for ssh, tftp and nbd (Port 2000) I am done for the clients?
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| 18:29 | <Gadi> provided you do NOT use LDM_DIRECTX, yes
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| 18:29 | (you need dhcp, too)
| |
| 18:29 | but, yes
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| 18:29 | :)
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| 18:29 | <vagrantc> pingufan: if you use localapps, then the clients need access to the internet on all ports you would want available on the internet
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| 18:30 | <pingufan> Clients shall not run anything locally.
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| 18:30 | <alkisg> Where do you run syslog?
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| 18:31 | <pingufan> On the server?
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| 18:32 | does nbd have its config at /etc/nbd-server/?
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| 18:33 | <Gadi> depends on the distro/version
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| 18:33 | and most of us don't know kiwi
| |
| 18:34 | see if there are entries in /etc/inetd.conf
| |
| 18:34 | or /etc/xinetd.d/
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| 18:34 | <Gadi> if not, try /etc/sysconfig/nbd*
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| 18:36 | <pingufan> This is the config file for ndbrootd in /etc/xinit.d : http://pastebin.com/9k1LNKis
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| 18:36 | <vagrantc> pingufan: ah sorry, i misread what you said
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| 18:36 | <pingufan> So it uses only this one port, 20000 ?
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| 18:40 | <cheese> Trying to use ltsp-build-client for HP t5565 with Via Nano under Ubunutu 11.10. What do I use for --arch?
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| 18:41 | <vagrantc> i386, unless it's one of the arm-based ones
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| 18:42 | <cheese> I dont' know much about the Via Nano but it says 64bit on their homepage...
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| 18:43 | <pingufan> Then you still can run them with 32 Bit. ;)
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| 18:43 | <vagrantc> you could try amd64, but i386 will be compatible with more ... unless you're using fatclients or localapps, i'd stick with i386
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| 18:44 | <khildin> | |
| 18:44 | <cheese> got it - thank you
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| 18:45 | <khildin> and what vagrantc says: you still can run 32 bit on 64bit processors
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| 18:45 | <pingufan> That was me. :)
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| 18:45 | <khildin> oops.... stand corrected... :)
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| 18:45 | <pingufan> np
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| 18:46 | <khildin> for more info: http://www.via.com.tw/en/products/processors/nano/
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| 18:46 | <cheese> Rigth but I though maybe a different arch was optimized better for it
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| 18:47 | <vagrantc> pingufan: we both said it :P
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| 18:47 | <pingufan> Yess. :)
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| 18:48 | <vagrantc> cheese: if you're using it as a thin client, it probably doesn't matter, and you'd more easily be able to plug 32-bit thin clients into the same network.
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| 18:48 | cheese: but nothing beats experimentation :)
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| 18:48 | <pingufan> vagrantc: Finally: I have this here open: tftp 22 9210 20000 + dhcp + dns - Sufficient?
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| 18:48 | <vagrantc> cheese: they might be worthy of doing localapps and/or fatclients, in which case 64-bit could help.
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| 18:48 | <pingufan> (on LAN side)
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| 18:49 | <vagrantc> pingufan: 20,000, not 2,000 ?
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| 18:49 | <pingufan> Do you see the pastebin link above?
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| 18:49 | I interpret this as 20000
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| 18:50 | <vagrantc> ah, no i didn't
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| 18:50 | <pingufan> But this is right, yes?
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| 18:50 | <vagrantc> guess so
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| 18:51 | kiwi-ltsp does all sorts of things differently
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| 18:51 | <vagrantc> sometimes with good reason, sometimes not, and no way of knowing why
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| 18:52 | <pingufan> Because then I will walk now over there and reboot all four thin clients. I hope that I will then have not again this strange effect, that only first two clients could start.
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| 18:52 | You do not have an idea what could have caused that?
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| 18:53 | First two clients booted fine, the third one only very seldom or never.
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| 18:54 | <lifeboy> Hi all! I think I'm almost there and hopefully it's not just in my imagination! I've got an Ubuntu 10.04 32 bit kernel compiled with R6040 ethernet support and a whole lot of other hardware and stuff I don't have not compiled (to make the image smaller and faster to load I believe).
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| 18:55 | <vagrantc> lifeboy: i'd be careful with trimming things out ... better to have it work but take microseconds longer to boot than not boot.
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| 18:56 | since nearly everything is modularized, it doesn't impact size much to leave un-used hardware in place.
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| 18:57 | <lifeboy> I only unchecked RAID drivers, multi-core support and a whole lot of netcard and video drivers and such. There is one *little* problem however. When I boot the client I get the error: "FATAL: Could not load /lib/modules/2.6.32.44+drm33.19/modules.dep" repeatedly and then the kernel panics.
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| 18:58 | I was wondering if the + in the version confuses the system, much like a + in filenames ?
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| 18:58 | <Gadi> doyou have a /opt/ltsp/i386/lib/modules/2.6.32.44+drm33.19/modules.dep?
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| 18:58 | <lifeboy> The build automatically puts that in and I've not been able to change it.
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| 18:58 | Gadi: Yes, I do
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| 18:59 | <Gadi> and you rebuilt the image?
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| 18:59 | <lifeboy> Yes, many times
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| 18:59 | <alkisg> And updated the kernels?
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| 18:59 | <Gadi> and you are sure that the client mounts the correct image?
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| 18:59 | <lifeboy> Yip
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| 18:59 | <Gadi> ie, when you drop into initrmafs (break=bottom) you can ls /root/lib/modules/2.6.32.44+drm33.19
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| 19:00 | <lifeboy> The panic says: Pid: 1. comm: init not tainted 2.6.32.44+drm33.19 #1
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| 19:00 | <Gadi> that only means you have the right kernel
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| 19:00 | not necessarily the right rootfs
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| 19:00 | <lifeboy> Ah, maybe the next line scheds some light
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| 19:00 | Call Trace:
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| 19:01 | ? printk+0x1d/0x25
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| 19:01 | Does that mean anything to anyone?
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| 19:02 | <alkisg> No :)
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| 19:02 | lifeboy: to check if modules.dep is inside your initrd:
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| 19:02 | mkdir /tmp/initrd
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| 19:02 | cd /tmp/initrd
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| 19:02 | zcat /var/lib/tftpboot/ltsp/i386/initrd.img | cpio -i
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| 19:02 | find . -name modules.dep
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| 19:02 | (on your server)
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| 19:02 | <lifeboy> sorry... I'll be back in 30 minutes... :-(
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| 19:40 | <lifeboy> Sorry I had to run off like that!
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| 19:41 | alkisg: I'm first running those commands now
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| 19:43 | Ok, I'm loading the whole initrd...
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| 19:43 | root@Ashton:/tmp/initrd# find . -name modules.dep
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| 19:43 | ./lib/modules/2.6.32-34-generic/modules.dep
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| 19:44 | I am under the impression that ltsp-update-kernels takes care of this?
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| 19:46 | <vagrantc> ltsp-update-kernels copies files around
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| 19:47 | it doesn't do much more than that
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| 19:51 | <lifeboy> I think I found my mistake: I created the inirrd.img -> initrd.img-2.6.32.44+drm33.19 instead of initrd.img!
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| 19:51 | The image boots now!
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| 19:52 | <vagrantc> your package installation should have handled that ... or did you not build it as a package?
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| 19:52 | <lifeboy> At some stage the package installation stopped doing it and I'm not sure why. So I had to manually create the symlinks
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| 20:28 | <lifeboy> I'll report back here as soon as I've for the graphics sorted out as well...
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