Public bug reported:
In Saucy Salamander, gdm will not start if 3d acceleration is not
available. This throws an error to /var/log/gdm/:0-greeter.log
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
** (process:4142): WARNING **: software acceleration check failed: Child
process exited with code 1
This is a regression from raring, and is the same if gnome-fallback is
unavailable.
Possibly the same bug as #1251281, as this shows the same error.
This is preventing me from upgrading to raring, as I run 4 screens on an
Nvidia Quadro NVS 450, meaning 3d is unavailable.
** Affects: gnome-session (Ubuntu)
Importance: Critical
Status: New
** Changed in: gnome-session (Ubuntu)
Importance: Undecided => Critical
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https://bugs.launchpad.net/bugs/1274013
Title:
gdm fails to start without 3d acceleration
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