** Description changed: Gnome-Session 3.8+ enforces usage of 3D, breaking usage of all gnome- - session based sessions in non-3D accelerated hardware and environments - as plat X, VNC and NX/X2GO. This makes usage of gnome-flashback - impossible. + session based sessions in non-3D accelerated environments as non-3D + enabled hardware, forwarded-X, VNC and NX/X2GO. - Overriding 3D checks (sym-linking /usr/lib/gnome-session/gnome-session-check-* to /bin/true) enables sessions start but gnome-session segfault few seconds later. - - (Sorry for hijacking this bug, but new gnome-session behavior has much broader affect then originally reported) + This breaks gnome-flashback, breaking upgrade path from previous LTS and + removing most sane option for cloud environments! + + Overriding 3D checks (sym-linking /usr/lib/gnome-session/gnome-session- + check-* to /bin/true) allows to start the session but it fails few + seconds later when gnome-session segfault without apparent reason. + + (Sorry for hijacking this bug, but new gnome-session behavior has much + broader affect then originally reported) Original report: ---------------- 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.
** Summary changed: - gnome-session is broken without 3d acceleration, breaking also gnome-flashback on X, VNC and NX/X2GO + gnome-session is broken without 3d acceleration, breaking gnome-flashback on non-3D H/W and cloud environments (Forwarded-X, VNC and NX/X2GO) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1274013 Title: gnome-session is broken without 3d acceleration, breaking gnome- flashback on non-3D H/W and cloud environments (Forwarded-X, VNC and NX/X2GO) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1274013/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
