I have just confirmed this is the same problem discussed here... http://ubuntuforums.org/showthread.php?t=1966002&page=2
and here... https://answers.launchpad.net/ubuntu/+question/194996 I found the exact same crash from Compiz on /var/log/syslog. May 4 02:16:06 juliohmnote kernel: [ 659.671328] compiz[11423]: segfault at 7f34b4c7c400 ip 00007f34e4eeb7e5 sp 00007fff2ea202c8 error 4 in libc-2.15.so[7f34e4e5a000+1b3000] So, this is not a gnome-sheel problem after all. Turns out, the current NVIDA driver (version 295.49) which is shipped with Precise has a known bug that needs to be fixed in the next releases. In the meantime, it is possible to downgrade to version 295.33 and use the driver without reproducing this particular problem. To downgrade: # Uninstall the current nvidia driver sudo apt-get purge nvidia-current # Download the previous version of this driver http://us.download.nvidia.com/XFree86/Linux-x86_64/295.33/NVIDIA-Linux-x86_64-295.33.run # Switch to tty1 (CTRL+ALT+F1) # This needs to be done without lightdm running sudo stop lightdm # Make sure you have build-essential installed and the current linux headers # The installation will try to build and install kernel modules sudo sh NVIDIA-Linux-x86_64-295.33.run # Restart lightdm sudo start lightdm Enjoy Unity with visual effects. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/990552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
