The LTSP packages are very out of date in (ed)ubuntu, try adding the Greek schools PPA.

add-apt-repository ppa:ts.sch.gr
apt-get update
apt-get dist-upgrade

in both the server and the chroot, and then run ltsp-update-image.

I've solved various login-related bugs in LTSP in the last few months, it's possible that what you're seeing is one of them.

Cheers,
Alkis

On 05/10/2015 12:21 μμ, Daniel Huhardeaux wrote:
Hello,

I installed an Edubuntu 14.04.3 server with LTSP activated. I want to
connect using a thin client like Pi using Berry Terminal. Problem is
that connection failed with

gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session[2469]: WARNING: software acceleration check failed: Child
process exited with code 1
gnome-session[2469]: CRITICAL: We failed, but the fail whale is dead.
Sorry....

I tried various solution from internet like upgrading to eugenen san
ppa, problem is still there.

Question: does someone use 14.04 with LTSP ? How did you solve this
matter knowing that few bugs are open on launchpad ? Is there an easy
way to replace gnome-session with another binary (mate-session?) and how ?

Thanks to share your experience.

Regards

Daniel



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