I did a clean install of 12.04 and have been experiencing this a few times per day also on with my nvidia 8600 GT card. That was with nvidia- current-updates at 295.40. Never saw this problem on 11.10. You will see a xorg server segmentation fault in the log file when this happens. I installed the 295.49 driver from nvidia site and get the same seg fault. Then installed the 302.07 beta driver and still see the seg fault.
.. [ 2262.985] (II) NVIDIA GLX Module 302.07 Fri Apr 27 11:17:35 PDT 2012 .. Backtrace: [ 9523.698] 0: /usr/bin/X (xorg_backtrace+0x37) [0xb76a2627] [ 9523.698] 1: /usr/bin/X (0xb751a000+0x18c3aa) [0xb76a63aa] [ 9523.698] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb74f740c] [ 9523.698] 3: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0xb4724000+0xcfc74) [0xb47f3c74] [ 9523.698] Segmentation fault at address 0xbe9f [ 9523.698] Caught signal 11 (Segmentation fault). Server aborting [ 9523.698] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/980519 Title: Random log off in Ubuntu 12.04 LT Beta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/980519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
