IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 17 May 2011 (all times are UTC)
| 00:03 | <nitin> alkisg : yes
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| 00:03 | <alkisg> nitin: the pxe protocol which is embedded in your NIC ROMs requires tftp
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| 00:03 | <nitin> is it possible.....becasue tftp port 69 is udp ,,,,,,it is unsecure
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| 00:03 | <alkisg> So in order to boot without tftp, you'd need to boot from a disk
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| 00:03 | (floppy, cd, hard disk, usb stick etc)
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| 00:04 | <alkisg> If you're willing to do that, then yes, it's possible
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| 00:04 | You put a software called ipxe (etherboot) locally and that then loads the kernel over http or whatever else you want.
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| 00:04 | But what do you mean "unsecure"?
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| 00:05 | The kernel is public, you shouldn't mind if others get access to it
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| 00:05 | <nitin> k but what are the setting i need to do in ltsp configuration...for hardisk boot or whatever
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| 00:05 | <alkisg> Here is all the required info: http://ipxe.org/
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| 00:06 | There's nothing LTSP related there, you use whatever method ipxe uses
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| 00:06 | But I'm afraid you're doing that for the wrong reasons
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| 00:07 | <nitin> alkisg : not actually ....what i am doing ...i am booting my client through pxe in kiosk mode and client is booting perfectlly
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| 00:07 | <alkisg> What I don't understand is this statement that you said: "tftp is not secure"
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| 00:07 | <nitin> alkisg : but in the same vlan or subnet ....if i boot my client in other vlan or subnet it is not getting booting
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| 00:08 | it is udp port that 's y i said ....
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| 00:08 | <alkisg> [23:03] *** [nitin] can we change tftp port 69 to other because it is the udp port .....and we can't open it for our comapny for security purpose
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| 00:08 | How is security related to udp?
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| 00:08 | <nitin> in our company udp port is disable bydefault
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| 00:08 | <alkisg> Why?
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| 00:09 | I'm asking because I think your best option is to tell your network administrators to open the tftp port
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| 00:09 | <nitin> in udp port any body can access it ...virus problem ...that every thing i asked to our network team ...they are saying like this
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| 00:09 | <alkisg> UDP is a protocol like TCP
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| 00:10 | It's not related to access or viruses at all
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| 00:10 | If they're saying that, tell your manager to fire them :)
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| 00:12 | <nitin> alkisg : k dear let me know if i open this port for my ltsp server .....please tell me there will not be any problem
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| 00:12 | <alkisg> You mean problem with viruses?
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| 00:12 | I never heard of viruses that target tftp servers
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| 00:13 | <nitin> k
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| 00:26 | <Hyperbyte> nitin: you could always ask them to open UDP 69 for your LTSP server only
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| 00:26 | But since the UDP port would only need to be opened on the internal network, and not to the external world, I honestly don't see how this could possibly be a security problem.
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| 03:16 | <andygraybeal> morrnnnining
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| 03:20 | <Hyperbyte> helllhelllellloo
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| 03:20 | :-D
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| 03:25 | <andygraybeal> hi Hyperbyte :)
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| 03:27 | i'm re-racking equipment
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| 03:27 | i probably won't be online for long gotta take it all down
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| 03:28 | adding new stuff, re-arranging, and making the posts a little deeper
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| 03:29 | okay ... going down
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| 05:40 | <vlt> Hello. I'm an LTSP user (on ubuntu) for several years now. After an upgrade to Ubuntu's latest LTS release it's nearly impossible to work; everything feels really slow. Any idea what could be the problem here? Do I need "thick" clients nowadays?
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| 07:34 | <alkisg> vlt: did you put LDM_DIRECTX=True in lts.conf? And, how much RAM does your client have?
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| 08:25 | zarrku (421225eb@gateway/web/freenode/ip.66.18.37.235) joined #ltsp. | |
| 08:26 | <zarrku> I am having a problem with the number of thin clients I am able to have running at one time.
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| 08:26 | I have the required memory to run the amount of thin clients I am trying to run. 100 thin clients ( 22gb orf ram )
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| 08:27 | However, after so many thin clients are booted, someone will try to log-in and will just get a black screen with a mouse cursor.
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| 08:27 | When a different thin client logs out, the thin client that had the black screen and a mouse cursor will then show a desktop.
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| 08:27 | Can you tell me what is wrong?
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| 08:28 | <zarrku> It starts doing this after about 55 thin clients boot
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| 08:33 | <shawnp0wers> Ok, whomever is responsible for the LDM_PRINTER_LIST and LDM_PRINTER_DEFAULT variables in lts.conf I think I love you. :)
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| 08:43 | <zarrku> is anyone here that is helping ltsp?
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| 08:44 | <shawnp0wers> zarrku: Most people here, when they have time. Leave a question, and if anyone can help, they will.
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| 08:44 | <zarrku> I know
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| 08:45 | chatrooms are like that
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| 08:45 | has lots of exp. with that, heh
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| 08:45 | but, thanks
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| 08:46 | <muppis> zarrku, have you looked servers load when that happens?
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| 08:46 | <zarrku> yep
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| 08:46 | just a drop in the bucket
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| 08:47 | <muppis> How about i/O wait?
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| 08:48 | <zarrku> System uptime 5 days, 22 hours, 02 minutes Running processes 3146 CPU load averages 2.15 (1 min) 2.10 (5 mins) 2.15 (15 mins) CPU usage 32% user, 34% kernel, 1% IO, 33% idle Real memory 15.69 GB total, 9.75 GB used
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| 08:49 | <muppis> Not bad.
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| 08:50 | <zarrku> I can't figure it out
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| 08:50 | it shouldn't have a problem
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| 08:50 | but it does
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| 08:52 | to me, it looks like there is a finite user limit, but according to documentation user limit is based on how much memeory you have
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| 08:52 | memory
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| 08:52 | <muppis> How abou networking?
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| 08:53 | +t
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| 08:53 | <zarrku> the load
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| 08:54 | we have cisco stack of 8 switchs
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| 08:54 | their gigabyte switches
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| 08:55 | according to the server stack commander, it 78 percent idle
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| 08:56 | <muppis> Then I'm out of ideas.
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| 08:56 | <zarrku> I found one article
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| 08:57 | but I'm not sure it is correct
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| 08:57 | http://ubuntuforums.org/showthread.php?t=694512
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| 08:59 | <muppis> I think, if it works after someone logs out.
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| 08:59 | I think not...
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| 09:05 | <zarrku> me too
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| 09:06 | guess its time to pay the piper at disklessworkstations
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| 09:06 | thanks
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| 09:07 | <muppis> No problem.
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| 09:08 | <abeehc> weird stuff
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| 09:10 | gnome desktops?
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| 09:10 | <zarrku> yes
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| 09:25 | <abeehc> from time to time i see black desktops from dbus getting really annoyed
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| 09:25 | i imagine .xsession-errors has nothing interesting on the client that won't login?
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| 09:26 | <dead_root> zarrku what OS are you using
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| 09:27 | <shawnp0wers> Question: Is iTalc stable and usable for 10.04 thin clients? I've never set it up, and can't find any current documentation on making it work. Perhaps iTalc is no longer the "thing" to set up?
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| 09:28 | <zarrku> Edubuntu 10.10
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| 09:29 | <dead_root> do you mind doing an iostat
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| 09:29 | and am curious your hard drive util with that many users
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| 09:30 | <zarrku> what command are looking for
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| 09:31 | <dead_root> iostat -x
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| 09:31 | you may need to apt-get sysstat
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| 09:32 | <abeehc> zarrku: auth.log contains nothing interesting on the server? seems like pam has the ability to enforce sucha limit
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| 09:32 | something like man limits.conf
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| 09:35 | <dead_root> usually /etc/security/limits.conf is all commented out on standard ubuntu
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| 09:35 | <abeehc> agreed any out of the box limit would strike me as strange
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| 09:35 | <dead_root> but abeehc might have a point and Edubuntu does something different
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| 09:35 | idk i have never used Edubuntu
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| 09:36 | it is weird though the blank session starts working when one user logs out
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| 09:43 | <zarrku> the limits.cnf is commented out
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| 09:50 | <abeehc> i got nothin really
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| 09:52 | <zarrku> what is NBD_swap
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| 09:56 | <abeehc> way to provide clients with more memory with server hd space?
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| 09:56 | has something changed to cause this problem? did it ever work as expected?
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| 09:57 | is the max amount of cliernts a consistent number before it stops others from logging in?
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| 09:57 | <shawnp0wers> zarrku: yes, it adds swap for the thin client, but stores it on the server
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| 09:57 | <abeehc> http://www.cyberciti.biz/faq/linux-increase-the-maximum-number-of-open-files/
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| 09:57 | <shawnp0wers> you need to add a line to /etc/hosts.allow though in order for it to work (NBD_SWAP)
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| 09:58 | <abeehc> i'd wonder if somehow you are hitting that type of limit
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| 10:34 | <zarrku> hello alkisg
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| 10:34 | <alkisg> Hi
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| 10:35 | <zarrku> I'm having unqiue problem with my thin clients
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| 10:36 | it seems after about 55 thin clients boot
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| 10:36 | that the next thin client will boot witha black screen and a mouse cusor
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| 10:36 | cursor
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| 10:37 | but with no desktop
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| 10:37 | <alkisg> Check your syslog, if it's a daemon limitation you should see an error
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| 10:37 | E.g. it could be the dbus file limit that was reported recently
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| 10:38 | <zarrku> if a user logs out, then the user with black screen and mouse cursor will get a desktop
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| 10:38 | okay
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| 10:39 | ay 17 13:22:27 GBLINUX ldminfod[34809]: connect from 192.168.0.37 (192.168.0.37) May 17 13:22:34 GBLINUX nbdrootd[34939]: connect from 192.168.0.37 (192.168.0.37) May 17 13:22:34 GBLINUX nbd_server[34941]: connect from 192.168.0.37, assigned file is /opt/ltsp/images/i386.img May 17 13:22:34 GBLINUX nbd_server[34941]: Size of exported file/device is 579198976
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| 10:40 | <zarrku> May 17 13:22:34 GBLINUX nbd_server[34941]: Disconnect request received.
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| 10:41 | <alkisg> https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/381063
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| 10:42 | <zarrku> thats it
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| 10:42 | I know it is
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| 10:42 | Thank you
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| 10:42 | hehe
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| 10:42 | ltsp has no limit users right
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| 10:42 | as long you have the memory to support it
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| 10:43 | correct
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| 10:44 | <alkisg> LTSP is just a wrapper for other software. So any limits wouldn't be LTSP related, but "other-software" related
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| 10:44 | E.g. tcpd limits, sshd limits, ulimits etc
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| 10:51 | <zarrku> so i need to update the dbus
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| 10:54 | <alkisg> No, just to edit a config file
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| 10:54 | *If* that's the bug that affects you
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| 11:20 | <zarrku> that article says this problem was fixed with dbus 1.4.6
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| 11:21 | It is possible to just update the dbus to 1.4.6
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| 11:21 | without trying to edit the dbus.conf file
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| 11:45 | <alkisg> zarrku: you can ask that question in #ubuntu, the dbus problem has nothing to do with ltsp...
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| 11:46 | <shawnp0wers> alkisg: Your name keeps turning up in my Google searches on iTalc can you verify, does it work with Ubuntu 10.04 and thin clients?
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| 11:47 | I don't see any documentation for 10.04, but I'm willing to poke around if it's worth it.
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| 11:47 | <alkisg> Nope, I can't, I gave up on it before 10.04
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| 11:47 | It should be working but I haven't tested it
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| 11:47 | <shawnp0wers> Fair enough. Thanks.
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| 11:47 | <alkisg> It crashed way too much for me, so we abandoned it and developed our own solution
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| 11:47 | * shawnp0wers raises an eyebrow | |
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| 11:47 | <shawnp0wers> Your own solution?
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| 11:48 | For remote controlling screens? Or soemthing else?
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| 11:49 | I might just see if I can figure out how to start VNC server in the chroot all I want is to be able to control a screen if need be.
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| 11:49 | I don't really care about demonstrations, etc.
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| 11:50 | <alkisg> For classroom management, lots more than just remote control, see some screenshots here: http://wiki.ubuntu-gr.org/sch-scripts/screenshots
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| 11:50 | You can start a vnc on thin clients whenever you want, as long as you're root and the user is logged on
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| 11:50 | Other than that, you can also install x11vnc on the chroot etc
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| 11:50 | <Ghidorah> Sorry to jump in... That is really awesome alkisg.
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| 11:51 | <shawnp0wers> Very cool. And yes, alkisg that looks very cool.
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| 11:51 | Is it a project you're planning to share at all?
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| 11:51 | <alkisg> It's open source, some people translated it from greek to english and use it
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| 11:51 | We'll internationalize it for ubuntu 12.04 (or 14.04 if we don't have enough time)
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| 11:52 | And try to get it in the debian/ubuntu archives
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| 11:54 | <shawnp0wers> That's really awesome looking. What's it called? (Or what is the English equivalent, so I can watch for it by name)
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| 11:54 | <alkisg> sch-scripts (sch is short for school)
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| 11:54 | Really bad name :-/
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| 11:54 | <shawnp0wers> ahh, cool
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| 11:54 | Still, looks like an amazing program.
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| 11:55 | <insert "it's all greek to me" joke here>
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| 11:55 | <alkisg> It's very convenient, it allowed 250 schools here to switch to ubuntu/ltsp without help from sysadmin etc
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| 11:55 | haha
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| 11:55 | I admire dgroos for actually translating it from greek to english
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| 11:55 | We have an english deb if you want, let me get the link...
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| 11:55 | http://users.sch.gr/alkisg/tosteki/index.php?topic=3220.0
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| 11:56 | <shawnp0wers> Awesome, thanks!
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| 11:56 | <Ghidorah> Think it'd work on Ubuntu 11.04?
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| 11:57 | <alkisg> Not sure, we're sticking to lts releases so I haven't tested it
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| 11:57 | Some people run it on 10.10, don't know about 11.04
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| 11:58 | <shawnp0wers> Whoa, you can power off thin clients?
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| 11:59 | alkisg, I might totally owe you a beer
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| 11:59 | or eleven
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| 12:00 | <alkisg> Sure, we even have a fixed gnome-session in our ppa so that poweroff works from inside the session too
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| 12:00 | So anyway, to start vnc inside a user session you can either (1) set a gconf key so that vino-server starts, or (2) read DISPLAY from the user /proc/pid/environ and run x11vnc on that display
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| 12:01 | <Ghidorah> wow
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| 12:01 | shawnp0wers: I'm in the same boat as you.
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| 12:01 | <alkisg> And of course you can always have x11vnc running in the chroot
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| 12:01 | We chose to have a sh daemon running in the chroot to save ram
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| 12:02 | <shawnp0wers> alkisg: I'm going to try sch-scripts first, if I can get it working, I'll happily go with that method! :)
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| 12:02 | <alkisg> OK :)
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| 12:02 | If you need help with that, ping me
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| 12:03 | <shawnp0wers> I will. I really am excited now. :D
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| 12:03 | <Ghidorah> shawnp0wers: are you doing LTSP-Cluster?
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| 12:04 | <shawnp0wers> No, not currently. I tried, and stgraber was kind enough to help me but it lacked some of the lts.conf settings I needed
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| 12:04 | So I am just using several servers, keeping the lts.conf files in sync manually
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| 12:04 | * shawnp0wers shrugs it works | |
| 12:04 | <Ghidorah> like what was missing?
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| 12:05 | <shawnp0wers> I don't remember...
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| 12:05 | <Ghidorah> k
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| 12:05 | <shawnp0wers> It was last year about this time. :)
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| 12:05 | <Ghidorah> I hear ya
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| 12:05 | I currently have 2 seperate servers
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| 12:05 | I'm trying to get cluster going
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| 12:05 | funny you mention lts.conf I was about to ping the room on when I would change settings at for it
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| 12:06 | <shawnp0wers> If you have lts.conf questions, feel free to ask. I have a meeting right now, but I'm no where near the smartest person in the room anyway. ;)
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| 12:06 | see you all later
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| 12:13 | <Gadi_eeepc> mgariepy: ping
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| 12:13 | anybody around running Windows2008R2 and terminal services?
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| 12:14 | <Ghidorah> I am
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| 12:14 | <Gadi_eeepc> can you try redirecting 2 print queues at the same time through rdesktop and tell me if it works for you?
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| 12:15 | it is: "-r printer:queue1,queue2"
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| 12:15 | I think this is an rdesktop bug, but it is driving me nuts
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| 12:15 | <Ghidorah> I will have to configure my LTSP to work with that TS. Can I get back to you?
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| 12:16 | <Gadi_eeepc> can you run it from any old linux box?
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| 12:16 | <Ghidorah> what version of rdesktop are you on?
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| 12:16 | <Gadi_eeepc> I tried both 1.6 and 1.7
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| 12:16 | no joy
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| 12:16 | both just display queue1
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| 12:17 | when connecting to w2k8r2
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| 12:17 | while both queues show fine in w2k3
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| 12:17 | <Ghidorah> oh that sucks
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| 12:18 | I'm configuring it now
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| 12:19 | <Gadi_eeepc> thx
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| 12:42 | <Lou_> what is the command in th terminal to see how many users you have logged into thin clients
| |
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| 12:45 | <Gadi_eeepc> try: "w"
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| 12:59 | <highvoltage> hie hie hie hie hie
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| 12:59 | (sorry I can't help but think that when I see Gadi's nick :p)
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| 13:00 | (and I'm not laughing at him, just in case you don't know Gadi)
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| 13:00 | <Gadi_eeepc> :)
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| 13:00 | hey, highvoltage, do you guys have a recent freerdp pkg in your ppa?
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| 13:01 | <highvoltage> there was one uploaded on 2010-08-27, not sure how recent that would be
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| 13:02 | <Gadi_eeepc> not recent enough
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| 13:02 | :)
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| 13:02 | <alkisg> Gadi_eeepc: just install the one from oneiric
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| 13:02 | <vagrantc> onorific
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| 13:03 | <highvoltage> this one has a slightly newer one: https://launchpad.net/~llyzs/+archive/ppa
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| 13:03 | which version do you need?
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| 13:05 | <Gadi_eeepc> it'd be nice if there was something from the recent git trunk
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| 13:06 | <alkisg> http://packages.ubuntu.com/search?keywords=freerdp ==> 0.8.2-2build1
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| 13:06 | <Gadi_eeepc> I am caught between bugs
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| 13:06 | :)
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| 13:06 | eww... bugs....
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| 13:07 | seems the bug Im after was fixed in December, 2010
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| 13:07 | in freerdp
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| 13:07 | and unfixed in rdesktop afaict
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| 13:09 | <alkisg> Then upload it to your ppa to make it available for others too :D
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| 13:10 | <Gadi_eeepc> yes, dear
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| 13:10 | <alkisg> https://launchpad.net/~gadi ===> hmm nope, not that :D
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| 13:11 | <abeehc> rdesktop has some activity recently
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| 13:11 | http://sourceforge.net/projects/rdesktop/files/rdesktop/1.7.0/
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| 13:11 | <mgariepy> abeehc, <Gadi_eeepc> I tried both 1.6 and 1.7
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| 13:12 | <alkisg> New maintainer for rdesktop? Nice
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| 13:12 | <abeehc> i saw that, mgariepy
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| 13:12 | i thought rdesktop was done forever but i think the people that did that old seemless patch took over
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| 13:13 | http://davelargo.blogspot.com/2011/04/road-to-seamless-windows.html
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| 13:17 | win2k8 ts printing improvements cost me at least a day or so with odd little things I found.. but our printing is backed by cups so never really done the queue redirection
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| 13:21 | <Gadi_eeepc> im working on a project where a school will have ltsp+rdp serving up windows desktops from a central terminal server. I plan to use the printer redirection to make printer-per-classroom setup easier
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| 13:22 | it would be nice if redirecting more than one printer weren't broken
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| 13:22 | :)
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| 13:24 | <vagrantc> who could possibly use two printers from one machine?
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| 13:25 | <Gadi_eeepc> this is to limit the choice of printers
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| 13:25 | to those in the classroom
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| 13:25 | I dynamically create printer queues on the client
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| 13:25 | then redirect them
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| 13:25 | that way, the users only see the printers for the classroom from that client
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| 13:26 | similar to the hackery that ltsp-cluster guys did on the linux side
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| 13:30 | <Gadi_eeepc> hmm
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| 13:31 | I cant get the package to build
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| 13:31 | something about dpkg-gensymbols
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| 13:31 | *sigh*
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| 13:41 | ||
| 13:42 | <alkisg> Gadi_eeepc: did you run apt-get build-dep and debuild -b -tc?
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| 13:42 | <Ghidorah> Gadi: I'm having to fix my TS right now, I'll try it and see if it works for me
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| 13:45 | <Gadi_eeepc> Ghidorah: thx
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| 13:45 | alkisg: I usually use dpkg-buildpackage
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| 13:45 | but, Ill try with debuild
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| 13:50 | same
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| 13:51 | <vagrantc> both should fail earlier if you have unresolved build-dependencies
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| 13:51 | <alkisg> I've sent it to launchpad, lets see how it goes there
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| 13:55 | <Gadi_eeepc> wwhat did u send? the latest git?
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| 13:55 | or the oneric pkg?
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| 13:55 | <mistik1> re
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| 13:55 | <alkisg> Git
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| 13:56 | <Gadi_eeepc> did you copy the debian dir from oneiric?
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| 13:56 | <Ghidorah> Does anyone have any documentation on LTSP-Cluster and the lts.conf file?
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| 13:56 | <alkisg> Gadi_eeepc: yup
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| 13:56 | https://launchpad.net/~ts.sch.gr/+archive/proposed/+sourcepub/1732644/+listing-archive-extra
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| 13:56 | <Gadi_eeepc> Ghidorah: ltsp-cluster doesnt use the lts.conf file
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| 13:56 | <alkisg> Just a quick upload, I didn't check anything
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| 13:57 | <Ghidorah> so the list in the attribute drop down is all that there is as far as options go?
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| 13:57 | <Gadi_eeepc> ah, no
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| 13:57 | you can add more
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| 13:57 | you know that python control-center.py <foo> step?
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| 13:58 | <Ghidorah> Yes sir
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| 13:58 | <Gadi_eeepc> modify <foo> and repeeat
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| 13:58 | <Ghidorah> that adds attributes?
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| 13:58 | <Gadi_eeepc> yup
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| 13:58 | <Ghidorah> which I assume dynamically builds the lts conf?
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| 13:58 | or lts conf completely gone in cluster?
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| 13:59 | <Gadi_eeepc> completely gone as a flat file
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| 13:59 | the client queries the control center
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| 13:59 | that sends it the attributes
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| 13:59 | <alkisg> Failed to build. Log: https://launchpadlibrarian.net/71901417/buildlog_ubuntu-lucid-i386.freerdp_0.8.2-3~ppa1_FAILEDTOBUILD.txt.gz
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| 14:01 | <Gadi_eeepc> alkisg: thats different than what I get
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| 14:01 | <alkisg> cp: cannot stat `debian/tmp/usr/bin': No such file or directory
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| 14:01 | <Gadi_eeepc> I think I get further than that
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| 14:18 | <Ghidorah> Gadi_eeepc: Stupid question. With the control-center.py I would use modify parameter to add a new attribute?
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| 14:24 | <Gadi_eeepc> I just edit the text file
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| 14:24 | if a parameter is modified, I have found that I have to remove it and add it
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| 14:24 | so, I comment it out
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| 14:24 | run the script
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| 14:25 | uncomment it
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| 14:25 | run the script again
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| 14:33 | <Ghidorah> You don't happen to have a different file than what is on the howto do you?
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| 14:37 | <Gadi_eeepc> what problem are you having?
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| 14:41 | <Ghidorah> I'm trying to use LOCALDEV_DENY_FLOPPY = True
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| 14:44 | <Ghidorah> Gadi: Nevermind, I figured it out! Thanks for your help!
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| 14:44 | Also, I have a CAL issue with my Win2k8 TS. Can I test for your printing issue tmrw?
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| 14:49 | <Gadi_eeepc> sure
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| 14:49 | thx
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| 14:50 | <Ghidorah> Do you think LTSP-Cluster is going to be as active with Stgraber moving on to Conical?
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| 14:52 | <Gadi_eeepc> gotta ask the rev lnx guys here
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| 14:52 | <highvoltage> "as active"
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| 14:52 | interesting way of putting it
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| 14:54 | stgraber is telling me he still has some pathes that he needs to commit, and he's using some parts for weblive
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| 14:59 | <Gadi_eeepc> he's probably referring to the -ng
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| 14:59 | <Ghidorah> -ng?
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| 14:59 | <Gadi_eeepc> the next generation ltsp-cluster
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| 15:00 | stgraber was working on that
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| 15:00 | <Ghidorah> oh nice
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| 15:02 | Anyhow thanks for your help today! I'm going home while I have the chance. Have a great night.
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| 17:24 | <Gadi_eeepc> mgariepy: still around?
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| 00:00 | --- Wed May 18 2011 | |