Eugene,
I have purged and re-installed your PPA as you suggest in comment #20, but the problem is back:
The session does never start, and in ~/.xsession-errors I see:
gnome-session-flashback (3.8.0): attempting to launch gnome-session at 2014-09-22T13:14:34+0200
gnome-session-is-accelerated: No hardware 3D support.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session-is-accelerated: No hardware 3D support.
gnome-session-check-accelerated: Helper exited with code 256
** (process:12360): WARNING **: software acceleration check failed: Child process exited with code 1
** (gnome-session:12360): CRITICAL **: We failed, but the fail whale is dead. Sorry....
Eugene,
I have purged and re-installed your PPA as you suggest in comment #20, but the problem is back:
The session does never start, and in ~/.xsession-errors I see:
gnome- session- flashback (3.8.0): attempting to launch gnome-session at 2014-09- 22T13:14: 34+0200 session- is-accelerated: No hardware 3D support. session- check-accelerat ed: Helper exited with code 256 session- is-accelerated: No hardware 3D support. session- check-accelerat ed: Helper exited with code 256
gnome-
gnome-
gnome-
gnome-
** (process:12360): WARNING **: software acceleration check failed: Child process exited with code 1
** (gnome- session: 12360): CRITICAL **: We failed, but the fail whale is dead. Sorry....
Has something changed with your PPA?