IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 19 September 2012 (all times are UTC)
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| 06:04 | <ltspuser_19> Hello good people, I need help please. I'm trying to get a couple of old thin clients running on Edu12.4. I have changed the Color depths, cancelled encrypted ssh pretty much everything that the manual suggets. One still goes to the login screen then locks up, while the other doesn't get past the dos like screen, it hangs with the curser just blinking. Is anyone ale to help please. I know they work on an older CentOS ltsp, so I h
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| 06:08 | <cyberorg> ltspuser_19, try XSERVER=vesa
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| 06:11 | <ltspuser_19> ok, will try now, thanks.
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| 06:21 | <mkuzu> heloo
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| 06:21 | A PROBLEM here:
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| 06:21 | thing client wibtek
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| 06:22 | amd64 configuration works
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| 06:22 | but as the machine have intel MGA 3600 on it
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| 06:22 | I need to run i386
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| 06:22 | MBError =
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| 06:23 | Exported device is too big for me. Get 64 bit machine :-(
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| 06:23 | :-( included
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| 06:23 | any idea
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| 06:23 | ?
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| 06:23 | <ltspuser_19> It appears that didn't work cyberorg. When I change the fields within the lts.conf file, then save, do I need to do anything else. Because I don't think changes that I make are infact taking effect. I just tested it out by using LDM=AUTOLOGIN-True, but it still had the login screen?
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| 06:25 | <cyberorg> LDM_AUTOLOGIN requires LDM_USERNAME and LDM_PASSWORD set as well
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| 06:26 | check the path of lts.conf you are editing, it has to be the one in tftpboot
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| 06:27 | <alkisg> ltspuser_19: you can try with SCREEN_07=shell in lts.conf, you're supposed to get a shell this way. Then, try lspci -nn -k | grep -A 2 VGA to see which graphics card the clients have
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| 06:28 | mkuzu: what's the output of this? grep -r '' /etc/nbd-server
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| 06:33 | <mkuzu> Pasting
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| 06:33 | .
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| 06:33 | .
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| 06:33 | .
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| 06:33 | /etc/nbd-server/conf.d/ltsp_amd64.conf:[ltsp_amd64]
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| 06:33 | /etc/nbd-server/conf.d/ltsp_amd64.conf:exportname = /opt/ltsp/images/amd64.img
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| 06:33 | /etc/nbd-server/conf.d/ltsp_amd64.conf:readonly = true
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| 06:33 | /etc/nbd-server/conf.d/ltsp_i386.conf:[ltsp_i386]
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| 06:33 | /etc/nbd-server/conf.d/ltsp_i386.conf:exportname = /opt/ltsp/images/i386.img
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| 06:33 | /etc/nbd-server/conf.d/ltsp_i386.conf:readonly = true
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| 06:33 | <alkisg> !pastebin
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| 06:33 | <ltsp> 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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| 06:33 | <mkuzu> /etc/nbd-server/config:[generic]
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| 06:34 | /etc/nbd-server/config:# If you want to run everything as root rather than the nbd user, you
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| 06:34 | /etc/nbd-server/config:# may either say "root" in the two following lines, or remove them
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| 06:34 | /etc/nbd-server/config:# altogether. Do not remove the [generic] section, however.
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| 06:34 | /etc/nbd-server/config: user = nbd
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| 06:34 | /etc/nbd-server/config: group = nbd
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| 06:34 | /etc/nbd-server/config: includedir = /etc/nbd-server/conf.d
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| 06:34 | /etc/nbd-server/config:
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| 06:34 | /etc/nbd-server/config:# What follows are export definitions. You may create as much of them as
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| 06:34 | /etc/nbd-server/config:# you want, but the section header has to be unique.
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| 06:34 | .
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| 06:34 | .
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| 06:34 | .
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| 06:34 | .
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| 06:34 | ok
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| 06:34 | http://pastebin.com/CcKu5bjR
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| 06:35 | <alkisg> And the output of this? grep ^append /var/lib/tftpboot/ltsp/*/pxelinux.cfg/default
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| 06:36 | <mkuzu> http://pastebin.com/Jk5MXMnU
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| 06:37 | <alkisg> mkuzu: those look fine, now, did you say you want all clients to boot from amd64, and one client to boot from i386?
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| 06:37 | <mkuzu> well my dhcp configuration
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| 06:37 | is for amd64 for all machines
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| 06:37 | and
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| 06:37 | I have a configuration
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| 06:37 | host
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| 06:37 | test
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| 06:37 | defining the ethernet address of my test client
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| 06:37 | all others boot from amd64 cconfig
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| 06:38 | and my test i 386
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| 06:39 | <alkisg> On the server: ls -lha /opt/ltsp/images
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| 06:39 | On the client busybox: cat /proc/cmdline
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| 06:41 | <mkuzu> pasting here
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| 06:41 | drwxr-xr-x 2 root root 4.0K Sep 19 09:07 .
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| 06:41 | drwxr-xr-x 5 root root 4.0K Sep 18 22:00 ..
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| 06:41 | -rw-r--r-- 1 root root 415M Sep 18 22:17 amd64.img
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| 06:41 | -rw-r--r-- 1 root root 282M Sep 19 09:07 i386.img
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| 06:41 | that was the server
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| 06:42 | copying from the screen
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| 06:43 | ro initrd=initrd.img root=/dev/nbd0 init=/sbin/init-ltsp quiet splash plymouth :force-splash vt.handoff=7 nbdroot=:ltsp_i386 BOOT_IMAGE=vmlinuz
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| 06:52 | .
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| 06:52 | I followed the procedur:
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| 06:52 | ltsp-build-client -a i386
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| 06:52 | ltsp-build-kernels
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| 06:52 | ltsp-build-image -a i386
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| 06:54 | <alkisg> !nbd-client
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| 06:54 | <ltsp> nbd-client: To try mounting the NBD image from the client initramfs: nbd-client 192.168.67.1 -N /opt/ltsp/i386 /dev/nbd0
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| 06:54 | <alkisg> So, from the client busybox:
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| 06:54 | nbd-client server-ip -N :ltsp_i386 /dev/nbd0
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| 06:55 | This tells you that you need an 64bit machine?
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| 07:06 | <ltspuser_19> alkisg- it returned 00:03.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Rage XL [1002:4752] (rev 27). Subsytem: Compaq Computer Corp Proliant Rage XL [0e11:001e] Kernel modules: atyfb
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| 07:11 | <alkisg> ltspuser_19: that's on the computer that gets to the login screen, or the other that stays at "dos"?
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| 07:14 | <ltspuser_19> Sorry thats on the server. The one that gets to login locks up about 15 to 20 seconds after loging in. The the one that hangs on DOS stays at "Trying to load: pxelinux.cfg/default"
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| 07:17 | <alkisg> !quiet-splash
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| 07:17 | <ltsp> quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and remove quiet splash plymouth:force-splash vt.handoff=7
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| 07:17 | <alkisg> That ^ for the "dos" hang
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| 07:19 | <cyberorg> "dos" :)
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| 07:25 | <mkuzu> .
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| 07:25 | Yes it tells I need an 64 bit machine
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| 07:25 | .
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| 07:37 | <ltspuser_19> alkisg and ltsp- I hope that msg to quiet-spash was for me cos I deleted it and it is still slowly loading, stopping then starting again. It is up to 305.019899 kernel=thread=helper +0x6/0x10
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| 07:38 | <alkisg> ltspuser_19: yes that was for you, how much ram does that client have?
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| 07:38 | <ltspuser_19> 64mb
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| 07:39 | <alkisg> It's too little for 12.04
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| 07:39 | It needs about 100 mb to boot
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| 07:41 | <ltspuser_19> I see. so looks like I should throw that away then. as unfortunately the ram is soldered on the MB and is not upgradeable:(
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| 07:48 | <ltspuser_19> alkisg is there a way I could get this thin client to use a cut down version rather than the full desktop so it can at least boot?
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| 07:51 | <alkisg> ltspuser_19: you can install debian, or remove plymouth from the initramfs
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| 07:51 | Or use altlinux... etc etc, generally not worth the trouble
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| 07:55 | <ltspuser_19> I really like 12.4, actually just downloaded 12.4.1 to use. I was hoping there may be a way to get these old thin's to obtain a cut down version off the server while leaving the better PC's using the normal and better desktop as now I'm accustomed to
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| 08:25 | <alkisg> No, 12.04 is not proposed for clients with < 128 MB RAM
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| 08:25 | You could use 10.04, or debian, or altlinux, or manually patch the 12.04 initramfs yourself
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| 08:45 | <ltspuser_19> alkisg- is there anywhere I can find a "how to" to manually patch 12.04?
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| 08:45 | <alkisg> No
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| 08:45 | /usr/share/initramfs-tools => inside there, you need to read the code etc
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| 08:46 | Remove PLYMOUTH from the configuration, update-initramfs -u to regenerate it, etc etc
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| 08:55 | <ltspuser_19> Righto, you lost me after etc, etc. Looks like I'll take your advice and give debian a go. Even though I had my heart set on 12.4.1. Thanks for all your help
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| 11:44 | <muppis> !jetpipe
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| 11:44 | <ltsp> Error: "jetpipe" is not a valid command.
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| 11:50 | mkuzu has joined IRC (mkuzu!~quassel@188.59.86.216) | |
| 11:51 | <mkuzu> helo
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| 11:51 | <muppis> !learn jetpipe as Jetpipe -script has founded to be unstable in some cases. You can try C written Jetpipe from GitHub https://github.com/bilange/jetpipe or switch it to USB/IP and use these scripts http://pastebin.com/Ltdi2TCL Support AIO devices as well.
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| 11:51 | <ltsp> The operation succeeded.
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| 11:52 | <andygraybeal> morning
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| 11:53 | <mkuzu> EXT4-fs (nbd0): unable to read superblock
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| 11:54 | <ogra_> muppis, erm., that doesnt even have half the functionality the current jetpipe has, it is based on a years only branch from me ...
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| 11:54 | muppis, you should at least note that function is limited in the bot entry
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| 11:55 | Parker955_Away is now known as Parker955 | |
| 11:56 | <alkisg1> muppis: did you try it? Does it work?
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| 11:56 | <muppis> alkisg1, just made those to work.
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| 11:56 | In production.
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| 11:56 | <ogra_> (there was a large and complete rewrite of my crappy initial code a few years ago)
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| 11:57 | <alkisg1> ogra_: I don't remember if I asked you, is jetpipe just a redirect? I mean, could we use socat instead?
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| 11:57 | <ogra_> would be nice if someone could take the .c code and follow suit so we could replace it without regressions
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| 11:57 | <muppis> !learn jetpipe as Jetpipe -script has founded to be unstable in some cases. You can try C written (but limited) Jetpipe from GitHub https://github.com/bilange/jetpipe or switch it to USB/IP and use these scripts http://pastebin.com/Ltdi2TCL Support AIO devices as well.
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| 11:57 | <ltsp> The operation succeeded.
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| 11:57 | <mkuzu> helo
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| 11:57 | alkisg1
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| 11:57 | <alkisg1> Hi mkuzu
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| 11:57 | <mkuzu> I guess you will remember
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| 11:57 | <ogra_> alkisg1, might be, try it :)
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| 11:58 | <alkisg1> muppis: care to try with socat instead? ^
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| 11:58 | <ogra_> i guess you could use a shell script and use > as well :)
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| 11:59 | <mkuzu> Exported device is too big for me. Get 64 bit machine :-(
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| 11:59 | <ogra_> nc -l 1234 > /dev/lp0
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| 11:59 | that would work too ;)
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| 11:59 | listenin on port 1234
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| 11:59 | <mkuzu> my built client for i386
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| 11:59 | gives this when booting
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| 11:59 | but amd64 works fine
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| 11:59 | <muppis> alkisg1, what I'm aware, hplip doesn't like from socat.
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| 12:00 | <alkisg1> muppis: why? what does jetpipe.c do more, than just a redirect?
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| 12:00 | Parker955 is now known as Parker955_Away | |
| 12:00 | <alkisg1> Like nc, socat, or just bash <> /dev/tcp?
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| 12:00 | <ogra_> the point isnt the redirect in jetpipe but the pre-processin and handling of different ports and protocols (serial, parallel and usb printers etc)
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| 12:00 | <muppis> Well.. That's why I ended up with USB/IP, beacause jetpipe.c didn't work aswell :D
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| 12:01 | <ogra_> for the redirect *any* way should work
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| 12:01 | <alkisg1> The preprocessing could be handled by a shell script before it decides what params to pass to nc/socat, right?
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| 12:01 | <ogra_> and i bet the nc command above would do fine
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| 12:01 | <alkisg1> But I wonder why muppis reports that it doesn't work...
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| 12:01 | <ogra_> alkisg1, exactly what i mean
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| 12:02 | doesnt patetr what lang it is in ... in the end its some pre-prosessing for different target devices and a simple redirect
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| 12:02 | s/patetr/matter/
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| 12:02 | tsk
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| 12:02 | <alkisg1> But why would that not work? muppis says it doesn't work in python, it doesn't work in C, etc...
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| 12:03 | <ogra_> dunno, most likely not jetpipes fault per-se
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| 12:03 | <alkisg1> And others reported printers hanging with jetpipe
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| 12:03 | <ogra_> device setup, premissions etc
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| 12:03 | probably udev-acl doesnt dtrt
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| 12:03 | <alkisg1> Usually it works for a while, then hangs
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| 12:03 | <ogra_> ram :)
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| 12:03 | <alkisg1> muppis: could it be a problem with little ram on the client?
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| 12:03 | <muppis> Well. Customer is using 10.04, so there can be a bug in script. There's HP Laserjet P2015 connected to client and with jetpipe worked fine a while, but then jetpipe just died and after client reboot cups died.
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| 12:04 | <ogra_> i would put my bets on RAM
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| 12:04 | especially since cups dies as well
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| 12:04 | <muppis> Looks like it got 512 RAM.
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| 12:05 | <ogra_> well, you should set up some RAM monitoring and check what happens when jetpipe dies
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| 12:05 | do you use nbd swap ?
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| 12:05 | <muppis> Nope.
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| 12:06 | <mkuzu> ...
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| 12:06 | Now my question is:
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| 12:06 | I have the LTS on 64 bit kernel
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| 12:06 | and I am building clients for i386 arch
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| 12:07 | does that yield to a problem
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| 12:07 | because the initrd img file
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| 12:07 | I get this way
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| 12:07 | cannot be used
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| 12:07 | during boot
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| 12:07 | the thin client displays
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| 12:07 | <ogra_> could you try typing whole lines before hitting enter ... it is very hard to read this way
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| 12:07 | <mkuzu> Exported device is too big for me. Get 64 bit machine :-(
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| 12:07 | <muppis> ogra_, was in plans to make them use local swap. For due licensing and agreements HDD's are left in can could be used as swaps.
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| 12:08 | <mkuzu> Sorry
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| 12:09 | <ogra_> muppis, well, theoretically there is nothing in jetpipe that could cause a hang in itself so i would guess its the amount of data that gets cached or some such
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| 12:09 | might be that you hit an ulimit of the kernel too ....
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| 12:10 | and jetpipe has no logic to ask for a raise of any ulimits
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| 12:10 | <muppis> ogra_, possible. But not having any resources to study more in this case, sorry.
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| 12:10 | <ogra_> either f these might be your prob
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| 12:10 | alkisg1, did you already try anything with your zatab ?
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| 12:11 | apart from running it as is :)
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| 12:11 | <alkisg1> ogra_: I tried plugging the power adapter to a pc power cord, because its american socket wouldn't fit here
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| 12:11 | It worked :P
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| 12:11 | <ogra_> haha
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| 12:11 | i have adapters for that :)
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| 12:11 | <alkisg1> Other than that, nah, no time yet to play
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| 12:12 | <ogra_> k
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| 12:12 | * ogra_ just clones the kernel tree ... | |
| 12:12 | <ogra_> since hours ....
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| 12:12 | <alkisg1> In a month or so we'll finish with the many ltsp installations (new school year start now), and I'll have more time for it
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| 12:12 | <ogra_> in a month we should have a working image already :)
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| 12:13 | seems zareason did ubuntu installs themselves already ... there are youtube videos in tehri company channel ...
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| 12:13 | i wonder why they didnt publish images
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| 12:13 | <alkisg1> Aaah nice. Yeah I looked at the android stuff and I didn't know what to do with it, it was just like my phone
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| 12:13 | With ubuntu in it it'll be much more useful
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| 12:14 | <ogra_> well, not sure
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| 12:14 | <alkisg1> (actually I have a newer cyanogen mod in my phone, so it was even a bit of disappointement :D)
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| 12:14 | <ogra_> i have no idea how well tablet support is in the toolkits etc
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| 12:16 | <alkisg1> That's why they're giving them to us, though, right?
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| 12:16 | Report bugs, maybe send some patch..
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| 12:46 | <markit> hi alkisg :) I'm at work now, no time to chat... just wondering if the drop of NFS in favour of sshfs in 12.04 setup is still your choice or problems surfaces recently
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| 12:46 | (so I update my italian doc tonight on the subject)
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| 14:12 | <thebwt> so we're trying to install a custom software service, condor, to run on the ltsp clients. But I think I'm probably doing something wrong. It seems like access to non logged in users is complicated.
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| 14:29 | <thebwt> obviously sudo service condor start wont work, but we thought it would autostart.
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| 14:58 | <Hyperbyte> thebwt, I believe you can set programs to autostart using the update-rc.d command in Ubuntu. If you execute this in the ltsp-chroot, update the chroot and then reboot the clients, this might do it
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| 15:05 | <thebwt> Hyperbyte: thats what we thought, but somewhere in the ltsp magic I get the feeling that the local rc.d is ignored or something
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| 15:06 | <Hyperbyte> I don't believe so. Most of the LTSP stuff is done before rc.d
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| 15:07 | And I know for a fact I've enabled services during boot on LTSP via rc.d
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| 15:07 | I would try this:
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| 15:07 | !screen_02
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| 15:07 | <ltsp> screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
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| 15:07 | <Hyperbyte> Start the service there, see what happens.
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| 15:07 | Maybe it starts, but with errors
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| 15:07 | You can also do
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| 15:07 | !quiet-splash
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| 15:07 | <ltsp> quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and remove quiet splash plymouth:force-splash vt.handoff=7
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| 15:07 | <Hyperbyte> So you can see boot messages
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| 15:08 | <thebwt> roger that
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| 15:08 | <Hyperbyte> Should give you some more info on what's happening.
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| 15:08 | If you're wondering if rc.d works, you could also try something simple, like enabling sshd via rc.d, see if that boots.
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| 15:08 | But I'm 99% sure that'll just work like advertised.
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| 15:14 | <thebwt> okay so the user that starts the service doesn't exist, is there a way to autoload certain users?
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| 15:14 | I realize that not all our ldap users get loaded, only the current one needed
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| 15:15 | so I guess I need to force load the user needed?
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| 16:47 | <andygraybeal> does anyone know of a thin client that has multiple serial ports? the old 9 pin rs232?
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| 16:59 | <||cw> andygraybeal: an actually embedded one? not off hand. the ebox 3300/4500 JSK models have 2 ports though
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| 17:00 | <andygraybeal> okay thank you; two ports, i'll have a look!
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| 17:01 | i've never heard of ebox before
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| 17:02 | <||cw> this is the one I use most http://www.wdlsystems.com/modperl/view_services.cgi?r=detail&prod_num=1EBX43K&aisle_id=1043
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| 17:02 | <andygraybeal> are they fanless?
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| 17:02 | <||cw> yes
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| 17:02 | and VESA 100mm mountable without an extra bracket
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| 17:03 | I have some sandwiched between a monitor arm and a 19" touchscreen
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| 17:03 | <andygraybeal> nice :)
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| 17:03 | <||cw> you have to find your own screws to do that though
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| 17:04 | love the form factor, wish they were either faster or cheaper though
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| 17:05 | <andygraybeal> i found one with 4 rs232 ports :)
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| 17:52 | <thebwt> I have a service that's configured in rc*.d, but it wont start because it cannot find the user it needs. It has a custom user that we made in our ldap setup, but the user isn't loaded. Is there a way to fix this? I see users like www-data work so this is doable.
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| 18:09 | <alkisg> thebwt: add the user manually in the chroot?
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| 18:09 | What does it need the user for?
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| 18:19 | <thebwt> to start the service, it gives an error if the user 'condor' doesn't exist
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| 18:19 | I assume the process wants to run as that suer
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| 18:20 | <alkisg> You can either add that user in the chroot, or make a wrapper script that adds the user before starting the service, whichever you find easier
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| 18:25 | <thebwt> roger that
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| 18:26 | so how does the system decide what users to bring in from the host? It seems to know to include the user that logs in, but it doesn't try anyone else? We use ldap, so it was really nice that it just worked off the host system's configuration.
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| 18:28 | <||cw> thebwt: it brings in zero users
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| 18:28 | <||cw> thick client do fudge in the user that logs in, but it's temporary
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| 18:57 | <thebwt> gotcha ||cw, that's probably the biggest funny thing going on then.
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| 18:57 | I guess I should rpeface everything I say with "I'm using thick clienting"
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| 18:57 | preface*
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| 19:14 | <blakes> Wow did I have a disaster today! We had two labs (about 50 thin clients) connect almost simultaneously, and print their writing assignments. The server just couldn't handle the load and cups crashed constantly! I have a quad processor server (4 dual core AMD). any suggestions?
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| 19:16 | <blakes> Was thinking of creating a separate print server box and get printing off the LTSP server.??
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| 19:18 | <||cw> blakes: crashed? not just out of ram?
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| 19:18 | personally, I'd have a dedicated print server for 50 clients, and especially if it's all cups and not raw
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| 19:20 | <blakes> So how does the setup go if you aren't running cups on the ltsp Server... does every user need access to add a printer?
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| 19:21 | Adding a bit of training to show kids how to add printers... errgh! What about putting a config in the image and or something in skel?
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| 19:24 | maybe ram... I have 16GB installed and 1GB on most clients.
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| 19:25 | <||cw> well, if you point the ltsp hosts cups to the print servers cups, the processor is minimal on ltsp as it just has to http the job over, and the print server does all the ppd to raw formating
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| 19:25 | <blakes> ah... that shouldn't be too tough
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| 19:26 | you think 16 Gb is enough for say 55 clients
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| 19:53 | <Mip> Hey Gang - going to work on updating the client image on my 12.04.1 install of ltsp. Last time we did this, the kernel images disappeared from /opt/ltsp/i386/boot
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| 20:40 | <Mip> Hey Gang - the kernel and image updates went well. No loss of boot images for clients. Not sure why this broke last time, but it's working now. Thanks
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| 22:32 | <vagrantc> alkisg_work: the udev rules you needed changed were for ltsp packaging?
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| 22:38 | alkisg_work: pushed.
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