Edubuntu 12.04 LTSP - Fat clients hangs on shutdown with Kernel 3.8 and higher

[pbaco]

I've got this problem several times recently. I can't be more precise, but as far as i remember my last troubleshooting  session on this, I've found that at one point the disconnect script "disables" the network board. And on some mobos (lenovo with intel network chipset) this "freezes" the thin client before it reaches the final shutdown. The only workaround i've found so far is to replace the shutdown binary in the chroot with a good old "poweroff -fp".

My 2 cents. Rgds.

-------- Message d'origine --------
De : Alkis Georgopoulos <alkisg at gmail.com> 
Date : 19/05/2014  21:18  (GMT+01:00) 
A : Nick Fenger <nick.fenger at gmail.com> 
Cc : edubuntu-users at lists.ubuntu.com 
Objet : Re: Edubuntu 12.04 LTSP - Fat clients hangs on shutdown with Kernel 3.8 and higher 
 
Is there any reason to change the newer version of the nbd-disconnect 
script?
I haven't seen it fail to shutdown any client...


Στις 19/05/2014 09:59 μμ, ο/η Nick Fenger έγραψε:
> Hi there,
>
> Got thin and fat client shutdowns to work on a variety of client
> hardware by issuing these commands (not entirely sure which one does the
> trick):
>
>     pkill screen-session
>     /etc/init.d/udev stop
>     pkill pulseaudio
>     alsa --force-unload
>     halt -fp
>
> Struggled with this for some time as well, it's a nuisance for sure.
>
> -Nick
>
>
>
> On Fri, May 9, 2014 at 9:54 PM, Alkis Georgopoulos <alkisg at gmail.com
> <mailto:alkisg at gmail.com>> wrote:
>
>     Hi,
>
>     try updating $CHROOT/usr/share/ltsp/nbd-__disconnect with the newest
>     version from
>     http://bazaar.launchpad.net/~__ltsp-upstream/ltsp/ltsp-trunk/__view/head:/client/share/ltsp/__nbd-disconnect
>     <http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/view/head:/client/share/ltsp/nbd-disconnect>
>
>     Delete ltsp-shutdown.conf, remove the LDM patch, run
>     ltsp-update-image and test.
>
>     If it works, you could request an SRU (update release) for
>     nbd-disconnect.
>
>     Στις 09/05/2014 11:52 μμ, ο/η X-Dimension έγραψε:
>
>         Hello,
>
>         we are using LTSP with Edubuntu 12.04 for some years now and it
>         works
>         fine except a
>         shutdown problem, we had over one year ago with our Zotac Zbox
>         clients.
>         We had fixed this problem by using a patched version of LDM that is
>         starting "poweroff -fp" instead
>         of "poweroff" and also with an old "ltsp-shudown.conf" from Edubuntu
>         11.xx, that also forces
>         to use "poweroff -fp". The ltsp-shutdown.conf was needed to fix the
>         shutdown problem, when using Epoptes to power off the clients.
>
>         This Workaround was working fine with the Zotac Zbox, but we
>         have now
>         some Shuttle DS437 clients, that needs a newer Kernel version to run
>         smoothly.
>         After updating our LTSP images to Kernel 3.8.x all clients hangs
>         again
>         on shutdown when using the Epoptes management tool to poweroff
>         the clients.
>         The only way to successfully poweroff a client is to use the
>         patched LDM
>         version with "poweroff -fp".
>         After switching back to kernel 3.5.x, the shutdown problem is
>         gone, but
>         the Shuttle DS437 have some graphics problems and are running
>         very slowly.
>
>         Can anybody help me to fix this shutdown problem when using a newer
>         Kernel version?
>         It looks like the ltsp-shutdown.conf have no effect anymore when
>         using
>         Kernel 3.8 and later,
>         but i don't know why.
>
>         Thx
>
>
>
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