Update: I gave it another chance after finding bug 526857 comment 5. I applied that workaround and the machine has been running now for a few hours without crash nor freeze.
I still had a few NVRM: Xid (0007:00): 6, PE0001 which did not correlate to any observable freeze/flicker, then: Aug 21 18:19:49 luna kernel: [ 5907.594173] NVRM: Xid (0007:00): 3, C 00000001 SC 00000002 M 00000860 Data ffffff78 Aug 21 19:06:59 luna kernel: [ 8736.997129] NVRM: Xid (0007:00): 3, C 00000001 SC 00000002 M 000002ac Data 00000004 Aug 21 19:07:03 luna kernel: [ 8741.289690] NVRM: Xid (0007:00): 3, C 00000001 SC 00000002 M 000002ac Data 00000004 Aug 21 19:07:07 luna kernel: [ 8745.370445] NVRM: Xid (0007:00): 3, C 00000001 SC 00000002 M 000002ac Data 00000004 which caused a flicker and a temporary freeze. The time between log-entries could well be equal to the time of the freeze. -- xorg crashes randomly with seg fault https://bugs.launchpad.net/bugs/620478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp