IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 13 June 2017   (all times are UTC)

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09:54
<storm_>
hey everyone
09:54
got a problem with an LTSP
09:55
it kind of looks like stuck
09:55
i mean
09:55
it boots up and i can login
09:55
the moment i run an application like firefox from the lxde tray menu
09:56
it opens up and then if i click again for example in the address bar of firefox it opens another firefox window
09:57
it almost feels like the cursor is kind of "stuck" over the application icon in the tray menu
09:58
<alkisg>
Are you talking about an ltsp client, or the ltsp server?
09:58
<storm_>
client
09:58
the server looks good
09:58
<alkisg>
Which distro/version?
09:58
<storm_>
ubuntu 16.04 used the ppa provided in the ltsp-pnp page
09:59
https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
09:59
<alkisg>
OK
09:59
<storm_>
this is the page
09:59
<alkisg>
How much RAM does the client have?
09:59
<storm_>
2G
09:59
i have enabled the fat client support
10:00
<alkisg>
Do you have epoptes installed?
10:00
<storm_>
no
10:00
no epoptes
10:01
(the clients are diskless though)
10:01
<alkisg>
OK; either wait for someone else to help (I'll need to leave now), or install epoptes like the ltsp-pnp page says, run ltsp-update-image -c /, and then come again tomorrow a bit earlier for remote support
10:01
The bug sounds strange, I think remote vnc will be required there
10:01
<storm_>
i see
10:01
let me just ak you one thing
10:02
ask
10:02
could that be a refresh problem?
10:02
<alkisg>
Fat clients run the OS locally, so no "network xorg"
10:02
<storm_>
it feels like the cursor is not moving from where i have actually clicked
10:02
<alkisg>
If it works fine on the server, it should work fine on the clients too (unless there's a driver issue unrelated to ltsp)
10:03
<storm_>
i see
10:03
<alkisg>
You could try booting the clients with a live ubuntu usb stick
10:03
<storm_>
i will try
10:03
<alkisg>
If it happens on the stick too, then it's a driver issue, unrelated to ltsp
10:03
<storm_>
okay
10:03
do you have any other fast suggestions?
10:03
<alkisg>
If it only happens in ltsp, it sounds strange, it could e.g. be due to wrong environment variables within the lxde session
10:03
<storm_>
like what?
10:03
<alkisg>
No, if it's caused by ltsp, it sounds like a hard to troubleshoot issue
10:04
Like $XDG_CURRENT_DESKTOP etc
10:04
<storm_>
ltsp manpages con help?
10:04
can*
10:04
<alkisg>
No, if it's an ltsp bug, only reading the code would help
10:05
<storm_>
okay
10:05
i will still tinker a bit and let you know
10:05
<alkisg>
np
10:05
<storm_>
thanks man
10:05
do you know who else i could ask to?
10:08
<alkisg>
I don't think anyone other than me has touched the environment variables code in the last years
10:08
But the usb test should come first
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10:35
<dave102942>
I have a small network of 4 fat clients using Ubuntu 14.04.5 32bit with LTSP pnp (greek school ppa); I'm having a problem where clients will random freeze (time between freezes can be a few minutes to many hours). /var/log/syslog on server does not show anything related to the freezes, nor does the .xsession-errors on the /home/ direct for whoever was using the frozen terminal
10:35
Any ideas how to debug the freezes?
10:50
<alkisg>
Can you ping the clients when they freeze?
10:52
<dave102942>
Haven't tried, I will try next time one freezes
10:52
Any other suggestions, that way I have a bit more of a list of stuff to try next time on freeze
10:52
<alkisg>
press alt+ctrl+f1 on the client and check for kernel errors
10:53
Check dmesg on the client (as a localapp) after it un-freezes
10:53
If all the clients do it at the same time, it sounds like server side
10:53
<dave102942>
They don't do it at the same time
10:53
All different times; and have to reboot by power button
10:54
so dmseg on client will still have stuff after reboot? I thought it will be reset when it load the image from the network?
11:12
<alkisg>
Sorry I thought they were unfreezing after the freeze
11:13
You can enable persistent logging but it's hard to explain how
11:13
You can also try to leave them on alt+ctrl+f1 because if they hang there, you'll see the kernel panic messages
11:14
And of course you could also check with a live usb stick, because it might be unrelated to ltsp
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11:17
<dave102942>
Also these clients are all 64bit; but the server (also 64bit cpu) is running 32bit ubuntu; but this shouldn't normally be any problem right?
11:18
(I will try having the users keep alt+ctrl+f1 open while they are using; thanks for this tip)
11:19
<storm_>
hey all again
11:22
<dave102942>
I have another unrelated question; but I don't seem to be able to update the kernel commands, for example I tried editing /etc/ltsp/update-kernels.conf, and putting CMDLINE_LINUX_DEFAULT="init=/sbin/init-ltsp forcepae intel_idle.max_cstate=1 quiet splash", then running ltsp-update-kernels and ltsp-update-image --cleanup / but when I check the /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default it has not added any of the additional
11:22
And if I edit the pxelinux.cfg files directly; it just overwrites the changes when doing ltsp-image-update
11:24
<alkisg>
Edit it directly _after_ running ltsp-update-image
11:24
There's a procedure to properly add options there but what you want it temporary, so do it that way
11:24
<dave102942>
But then won't I have to remember to make the same edit every time I do any image update?
11:24
<alkisg>
32bit os isn't a problem, no
11:25
If you want it to be permanent, edit /etc/ltsp/update-kernels.conf, then run `/usr/share/ltsp/update-kernels`, and then ltsp-update-image -c /
11:25
/usr/share/ltsp/update-kernels puts the correct config to /boot/pxelinux.cfg/ltsp
11:25
...which finally reaches tftp
11:27
Ah another thing to blame would be out of ram
11:27
E.g. if apt-daily or other tasks run, that shouldn't normally be, and waste all the ram
11:28
<dave102942>
I don't think RAM is an issue; because clients have 4GB and on one of them I enabled a 100GB swap
11:30
<alkisg>
`du -sh /cow` and `free` locally on the client after some use will tell you
11:31* alkisg waves, later...
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11:43
<storm_>
guys
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12:17
<vervelak>
!socat
12:17
<ltsp>
socat: One way to share a console with a remote person is: [local pc] forward port 5500; apt-get install socat; socat tcp-listen:5500,keepalive=1 stdio,raw,echo=0 [remote pc] apt-get install socat screen; socat SYSTEM:"sleep 1; exec screen -xRR ra",pty,stderr tcp:REMOTE-IP:5500 & screen -l -S ra
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15:09
<sysadmin01>
hi
15:09
anybody to help me?
15:10
I just set up epoptes and epoptes client but no idea how to run epoptes on the client
15:14
<alkisg>
Are you using ltsp?
15:15
Maybe you're asking for this? http://www.epoptes.org/documentation/fat-clients
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18:13
<cbit>
HOLA CUANTOS EQUIPOS SOPORTA LA APLICACIÓN??
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18:23
<storm_>
hey guys
18:28
i had some problems with LTSP clients today. The problem was that i could see the mouse moving on the client's screen, but, if i opened an application like file manager on the client even if i could visually see the mouse moving around when i clicked somewhere inside this new file manager window it would open another file manager window. It looked almost like that the mouse was still capturing the input form the previous position (the
18:30
well, turned out it was the mouse itself... it was an old PS/2 mouse with USB emulation (no external adapter... are there any built-in usb converters??) and apparently the clients were not very happy with that mouse
18:31
since i had notified this to Alkisg i thought it would have been good to report my findings so that people may benefit from them
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22:45
<quinox>
busy day here