IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 23 October 2010 (all times are UTC)
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| 03:16 | <alkisg> !learn gnome-wm as The default window manager in gnome is gnome-wm, which automatically chooses compiz if it thinks that the card supports it, or metacity otherwise. Compiz causes problems to some clients, so forcing it to metacity can solve login problems.
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| 03:16 | <ltspbot`> alkisg: The operation succeeded.
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| 04:55 | <alkisg> !xauthority
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| 04:55 | <ltspbot`> alkisg: "xauthority" :: to access the client X session from a local root shell, try: eval $(tr '\0' '\n' < /proc/$(pidof -s ldm gdm-simple-greeter gnome-session | cut -d' ' -f1)/environ | egrep '^DISPLAY=|^XAUTHORITY=') && export DISPLAY XAUTHORITY
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| 09:17 | <Ghidorah> Good morning everyone.
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| 10:48 | <salomon_> Hello, I' having problems with one ltsp client, sometimes it shows a messages saying "task blocked for more than 120 seconds" when started, other times is does not, but it freezes when lt's loading the desktop, the server has Lenny with xfce
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| 12:19 | <berny6969> hi
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| 12:20 | anyone knows how to create usb pen for boot form wireless to ltsp edubuntu? i search in the wikibut dont view nothing,thanks
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| 12:22 | <alkisg> You need to put the wireless drivers to the initramfs, then copy the whole kernel to the usb stick etc. It isn't a trivial task.
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| 12:25 | <berny6969> is trivial task for me Xd,
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| 12:25 | thanks for your message
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| 12:26 | <alkisg> Here's how to add the modules: https://help.ubuntu.com/community/UbuntuLTSP/AddingModules
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| 12:26 | Then you need to copy the kernel to the stick + pass an "nbdroot=server:ip" parameter to it
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| 12:26 | <berny6969> its the first time for install ltsp and i dont know
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| 12:27 | the kernel image its i386.img?
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| 12:27 | on /opt/ltsp ?
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| 12:27 | <alkisg> No, it's on /var/lib/tftpboot/ltsp/i386/vmlinuz
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| 12:27 | and initrd.img there
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| 12:28 | <berny6969> wireless performance its good?
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| 12:29 | <alkisg> No, it's barely enough for 1 client
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| 12:30 | <berny6969> i want to connect 20 o 30 netbooks form wireless,its impossiblr to work?
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| 12:31 | <alkisg> With the current ltsp code, yes, because it uses X windows, so each client needs about 10-50mbps
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| 12:31 | So with a wireless connection of 50mbps, you could only serve 1-2 clients.
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| 12:32 | <berny6969> its more easy to connect to edubuntu server with vnc or rdp? ltsp support rdp?
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| 12:32 | sorry for basic questions XD
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| 12:34 | <alkisg> vnc, neatx, freenx etc, sure you can connect with that
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| 12:35 | But 30 netbooks on a single wireless connection will suck no matter how you do it :)
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| 12:35 | <berny6969> i use buffalo routers wifi N 300mpbs,and each router its connect to others with cable
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| 12:35 | in total 6 routers wifi n
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| 12:36 | but if client connect form vnc,italc cant control this connection no?
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| 12:37 | <alkisg> neatx or freenx are easier to handle and need less bandwidth than vnc
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| 12:37 | You could make italc work with neatx sessions... maybe they even work out of the box, I don't know
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| 12:38 | <berny6969> thanks alkisg !!!!
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| 12:38 | <alkisg> np, good luck with that :)
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| 12:39 | <berny6969> XD
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| 12:40 | I will try to put 30 ethernet cable on the classroom XDDD
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| 12:42 | <alkisg> What I want to do in the future is write the whole ltsp image to 30 sticks, and boot them as fat clients
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| 12:42 | So I'll get centralized authentication + NFS homes + iTalc-like class administration tool with very low bandwidth, so that it can work with wireless too.
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| 12:44 | <berny6969> this netbooks have windows xp / linux
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| 12:44 | its a spanish college and one student have one netbook free
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| 12:45 | its more easy boot on linux partition and connect to neatx etc
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| 12:45 | <alkisg> Yes, but much slower over wireless. You won't be able to even watch youtube this way.
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| 12:46 | If they already have linux, why do you want to netboot them?
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| 12:46 | Why don't you just setup ldap + nfs or something similar?
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| 12:46 | <berny6969> i know,but teachers knows ltsp and want to use
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| 12:48 | for me,only mount ltsp netbook on informatic classroom
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| 12:48 | and connect netbooks with italc client and use nfs for network folders
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| 12:49 | and the other problem is linux distribution for this netbooks,its a special made for catalan govern of spain
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| 12:49 | its very poor
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| 12:50 | its opensuse based
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| 12:55 | opensuse use kiwi-ltsp,its a diferent version?
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| 12:57 | <alkisg> kiwi-ltsp uses ltsp but it's somewhat different because of the kiwi integration
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| 12:59 | <berny6969> ok,thanks for all !!!!
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| 15:22 | <DraZoro> I get an error message while trying to build clients offline check here for error message http://paste.ubuntu.com/518902/
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| 15:27 | Any ideas or tips ^^^
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| 15:34 | <mherweg> try:
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| 15:34 | chroot /opt/ltsp/i386 umount /proc
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| 15:34 | sudo chroot /opt/ltsp/i386 umount /proc
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| 15:35 | <DraZoro> mherweg : Hi.... I am trying right away
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| 15:37 | mherweg : Should I create the i386 directory under /opt/ltsp ?
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| 15:38 | <mherweg> you dont have one ?
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| 15:38 | yes. try that
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| 15:39 | <DraZoro> mherweg : It was there but ltsp-build-client was complaining about so I removed and tried again. Hence ending up with an error above .
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| 15:39 | mherweg : The system refuse to umount ....
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| 15:40 | <mherweg> if the directory wasnt there, then thers nothing to umount
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| 15:41 | <DraZoro> ok
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| 15:41 | <mherweg> which linux version ?
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| 15:41 | <DraZoro> Ubuntu 10.10
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| 15:41 | <mherweg> i did not try that so far
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| 15:42 | <DraZoro> I performed the command on Ubuntu 9.10 and it worked like a charm
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| 15:42 | <DraZoro> mherweg : But you gave me something to work with ..
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| 15:42 | <mherweg> ltsp-build-client creates /opt/ltsp/i386
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| 15:42 | <DraZoro> Yes I does
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| 15:42 | *it
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| 15:44 | <mherweg> this works here on 9.04:
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| 15:44 | root@lenovo:/opt# chroot /opt/ltsp/i386 mount -t proc proc /proc
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| 15:44 | root@lenovo:/opt# chroot /opt/ltsp/i386 umount /proc
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| 15:46 | <DraZoro> mherweg : Are using the ltsp-build-client with --mirror option ?
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| 15:46 | <mherweg> no. but i doubt that ther's a connection to that error message that you did get
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| 15:47 | <alkisg> DraZoro: when it fails, what do you have in /opt/ltsp/i386? An initial chroot? Or an empty directory?
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| 15:47 | <DraZoro> Yes a lot
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| 15:48 | alksig : It is empty
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| 15:48 | alkisg : It is empty
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| 15:49 | <alkisg> DraZoro: then maybe it's a problem with debootstrap
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| 15:49 | Are you sure that exact line worked in 9.10?
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| 15:49 | <DraZoro> alkisg : Yes I even re-installed 9.10 to double check
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| 15:50 | * DraZoro is doing something wrong some where | |
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| 15:50 | * DraZoro checks man ltsp-build-client once again | |
| 15:50 | <alkisg> Is the server i386?
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| 15:50 | <DraZoro> alkisg : Yes
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| 15:51 | <alkisg> And /opt/ltsp/i386 is completely empty? No etc directory?
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| 15:51 | <DraZoro> alkisg: Nothing
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| 15:54 | I have mounted the iso image ....under /media/disk ....maybe this might help http://paste.ubuntu.com/518913/
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| 15:56 | The problem lies on this line "W: Failure trying to run: chroot /opt/ltsp/i386 mount -t proc proc /proc "
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| 15:56 | Because I fail to run chroot even manually
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| 15:57 | mherweg : If I can run the command you gave above the problem might go away.
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| 15:57 | <alkisg> Hmm... and it was working in 9.10 if you specified the loop-mounted cdrom directory, instead of the directory where the packages are?
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| 15:57 | (=some subdirectory within the cdrom)
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| 15:57 | <DraZoro> alkisg : Let me try that
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| 15:59 | When I put /dev/sr0 as mirror I get "E: Failed getting release file file:///dev/sr0/dists/maverick/Release"
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| 16:00 | <alkisg> No I meant /media/disk/<subdir>
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| 16:01 | But ok, maybe it autodetects the path. That's the alternate cdrom, right?
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| 16:01 | <DraZoro> alkisg : My bad ...I wonder which sub directory I will select
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| 16:02 | alkisg : Not alternate cdrom ....I used alternate cd for 9.10
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| 16:02 | <alkisg> :)
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| 16:02 | <DraZoro> Now I see the difference
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| 16:02 | <alkisg> Then that's your problem, the packages aren't there on the desktop .iso
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| 16:02 | * DraZoro kicks himself | |
| 16:02 | <alkisg> You need the alternate cdrom as a source
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| 16:02 | debootstrap should produce some warning though...
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| 16:02 | <DraZoro> alkisg : I was not away ...I am relieved now
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| 16:03 | Guys sorry for all the trouble.
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| 16:03 | <alkisg> np, nice to know that this mirror thing is working with the alternate cdrom :)
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| 16:04 | Can be handy for other installatinos
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| 16:04 | <DraZoro> alkisg : I works 100%
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| 16:04 | *it
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| 16:05 | * DraZoro will conduct more research on LTSP mechanism just after exams. | |
| 16:05 | <DraZoro> I love this project very much ...LTSP :)
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| 16:05 | * alkisg too | |
| 16:06 | <DraZoro> I love the idea of installing LTSP while installing ubuntu via alternative cd ...
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| 16:07 | * alkisg prefers installing from the desktop .iso nowadays | |
| 16:07 | <DraZoro> Boot alternative cd and press F4 then select LTSP ...
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| 16:10 | <DraZoro> Ok guys let me go back to work ...thanks a lot alkisg and mherweg
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| 16:10 | <alkisg> bb
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| 20:18 | <salomon_> Hi, does anyone know how to aplly the patch to disabel nbd-proxy? http://launchpadlibrarian.net/49591679/disable-nbd-proxy.patch
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| 21:07 | <salomon_> My problem is that one of the clients hangs when loading the desktop, the server is Debian Lenny with XFCE
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| 21:57 | <vagrantc> nbd proxy isn't used on debian at all
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| 21:57 | unless you manually configured it to use it
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| 21:58 | salomon_: look in the user's ~/.xsession-errors file ... look in /var/log/auth.log to make sure they're actually logging into the server
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| 22:01 | <salomon_> they log into the server
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| 22:05 | this are the errors on the log
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| 22:05 | x-session-manager: Fatal IO error 11 (Recurso no disponible temporalmente) on X server localhost:11.0.
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| 22:05 | xfce-mcs-manager: Fatal IO error 11 (Recurso no disponible temporalmente) on X server localhost:11.0.
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| 22:05 | It means Resource not available temporarely
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| 22:10 | <vagrantc> right
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| 22:11 | seems a bit odd.
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| 22:12 | is X11Forwarding disabled in /etc/ssh/sshd_config?
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| 22:12 | salomon_: are you able to "ssh -Y user@server xeyes" from another computer?
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| 22:14 | <salomon_> The strange thing is that it onle happens with one client, the other client works fine :(
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| 22:14 | let me check about X11Forwarding
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| 22:14 | <vagrantc> that is strange indeed.
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| 22:15 | well, if it works with other clients, that's not the problem ...
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| 22:15 | <salomon_> The 2 clients are diferent, the client that works fine is a PII 400MHZ with 256MB RAM
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| 22:15 | <vagrantc> salomon_: you might want to set SCREEN_07=ldm SCREEN_08=shell SCREEN_DEFAULT=07 in lts.conf
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| 22:15 | then you'd get a shell on tty8 to debug what's going on
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| 22:16 | look at the logs in the client's /var/log and such
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| 22:16 | <salomon_> ok, I will
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| 22:16 | <vagrantc> might be a similar issue to compiz with gnome, too ..
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| 22:16 | <salomon_> The client that had problem is a PI 233MHZ with 128MB RAM
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| 22:16 | <vagrantc> !compiz
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| 22:16 | <ltspbot`> vagrantc: "compiz" :: if compiz is giving you problems, one way to disable it for all users is: sudo gconftool-2 --direct --config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory --type string --set /desktop/gnome/session/required_components/windowmanager metacity
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| 22:16 | <vagrantc> that's getting pretty old ...
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| 22:16 | <salomon_> I'm using XFCE, I don't thing that uses compiz
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| 22:17 | <vagrantc> i don't know much about compiz, but it seems to cause problems on a few machines
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| 22:17 | salomon_: i don't know what else to try off the top of my head, but unfortunately, i've got to go
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| 22:18 | <salomon_> ok, thabnks anyway :)
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| 22:18 | I appreciate it
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| 22:19 | <vagrantc> seeing as i maintain ltsp on debian ... i do feel obliged to help a bit :)
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| 22:19 | though a lot of the ubuntu folks are pretty savvy with troubleshooting, too :)
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| 22:19 | anyways ...
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| 23:42 | <salomon_> I found that the problem is not xserver, it's something else since some times it can't even show the login screen cuz throws an error messages like "INFO: task xxx blocked for more than 120 seconds"
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| 23:45 | <abeehc> what kind of hardware is it
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| 23:46 | <salomon_> The client that hangs on is a Pentium I with 128MB (LTSP just need 32MB, as far as I know), so it is not a memory problem
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| 23:47 | some times I can login but it hangs a few seconds, when it is loading the desktop
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| 23:48 | <salomon_> I mean just work for a few seconds, I tryed seting SCREEN_07=ldm SCREEN_08=shell SCREEN_DEFAULT=07 in lts.conf
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| 23:49 | so I can change to a terminal and check some logs on the cliente but when it hangs, nothing works, not even the keyboard
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