Public bug reported:
I have just installed a fresh system with Ubuntu 12.04 LTS, and I am
unable to use Unity 3D or Gnome3 with visual effects on my laptop. I can
only use Unity 2D or Gnome Classic (no effects).
Once I login with visual effects, none of the window decorations appear,
gnome-shell does not load, and the desktop is unsable. I am only able to
click/navigate into folders because there is a directory in the desktop
which I can open... I can't even get screenshot of what it looks like,
since the keyboard never gets focus to type anything.
>From /var/log/syslog, I can see the following errors, which I believe
are related.
Apr 28 11:44:31 juliohmnote kernel: [ 1447.361473] gnome-shell[5366]: segfault
at 50 ip 00007f0826023b05 sp 00007fff78bc14d8 error 4 in
libcogl.so.9.1.0[7f0825fd8000+83000]
Apr 28 11:44:32 juliohmnote gnome-session[5290]: WARNING: Application
'gnome-shell.desktop' killed by signal
Apr 28 11:44:34 juliohmnote kernel: [ 1450.190498] gnome-shell[5460]: segfault
at 50 ip 00007f09968a5b05 sp 00007fffb64f2a68 error 4 in
libcogl.so.9.1.0[7f099685a000+83000]
Apr 28 11:44:35 juliohmnote gnome-session[5290]: WARNING: Application
'gnome-shell.desktop' killed by signal
Apr 28 11:44:35 juliohmnote gnome-session[5290]: WARNING: App
'gnome-shell.desktop' respawning too quickly
Apr 28 11:44:35 juliohmnote gnome-session[5290]: CRITICAL: We failed, but the
fail whale is dead. Sorry....
Apr 28 11:44:59 juliohmnote blueman-mechanism: Exiting
Apr 28 11:45:37 juliohmnote kernel: [ 1513.152459] gnome-shell[5626]: segfault
at 50 ip 00007f05ac0f2b05 sp 00007fffeb053d08 error 4 in
libcogl.so.9.1.0[7f05ac0a7000+83000]
I'll be glad to collect any files or command line outputs that may be of
help for this, so let me know. In my ignorance, all I can think of right
now is an lspci dump of the hardware I have (see attached).
Thank you for the help.
** Affects: nvidia-graphics-drivers (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/990552
Title:
gnome-shell crash: segfault at 50 ip 00007f2bd6028b05 sp
00007fffbb999068 error 4 in libcogl.so.9.1.0
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