With a Dell Precision M4600, running Fedora 21, I've started experiencing troubles with my X sessions within the last six months. The symptoms is that X frezzes, and sometimes, but not always, I can switch to a VT and make a controlled shutdown. At other times, the machine is totally unresponsive, and the only resort is to force a powerdown. I cannot state a more precise date for the first occurrence, as I wrote it off as thermal problems. However, after a vacuum session, the problem persisted, so I dug into the system logs. In /var/log/messages, I find the following pattern on each occurrence: Apr 28 00:18:35 localhost kernel: [11057.344140] nouveau E[gnome-shell[2031]] multiple instances of buffer 156 on validation list Apr 28 00:18:35 localhost kernel: [11057.344157] nouveau E[gnome-shell[2031]] validate_init Apr 28 00:18:35 localhost kernel: [11057.344162] nouveau E[gnome-shell[2031]] validate: -22 Apr 28 00:18:35 localhost kernel: nouveau E[gnome-shell[2031]] multiple instances of buffer 156 on validation list Apr 28 00:18:35 localhost kernel: nouveau E[gnome-shell[2031]] validate_init Apr 28 00:18:35 localhost kernel: nouveau E[gnome-shell[2031]] validate: -22 Apr 28 00:18:35 localhost gnome-session: nouveau: kernel rejected pushbuf: Ugyldigt argument Apr 28 00:18:35 localhost gnome-session: nouveau: ch0: krec 0 pushes 1 bufs 16 relocs 0 Apr 28 00:18:35 localhost gnome-session: nouveau: ch0: buf 00000000 00000002 000 00004 00000004 00000000 Apr 28 00:18:35 localhost gnome-session: nouveau: ch0: buf 00000001 0000009e 000 00002 00000002 00000000 Apr 28 00:18:35 localhost gnome-session: nouveau: ch0: buf 00000002 00000079 000 00004 00000004 00000000 Apr 28 00:18:35 localhost gnome-session: nouveau: ch0: buf 00000003 00000007 00000002 00000002 00000000 ... The graphics card identifies as follows: 01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [Quadro 1000M] (rev a1) The frequency of the lock-ups are independant on wheter Optimus Prime is enabled or not. Has anyone seen something similar to this before, and if so, what cures have you found? -- //Wegge -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
