This is an issue that has been ongoing for over 1 1/2 years now. I have tried kernel after kernel and whether it's a Ubuntu kernel such as the one in my sig or a kernel from here - http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/ the video will intermittently freeze. Running XScreensaver causes it to freeze when switching between the different screen savers showing a black screen and the mouse cursor. The cursor can be moved and will switch between the arrow and the hand tool if hovering over a clickable area on the desktop even though it can't be seen. Giving an error output in my syslog of kernel: [578631.820045] [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer elapsed... render ring idle I was able to reproduce this yesterday by starting XScreensaver at 9:43am and at 13:44pm the video froze giving the above error. At other times when XScreensaver is not running the video will still randomly freeze however there is no specific time frame for this to happen. I've seen it go 2 days then freeze and have also seen it go 16 days then freeze. As I've said previously all background operations continue to run as just the video is frozen. I have had the random freeze happen when running this kernelkernel 4.0.0-997-generic #201503310205 SMP Tue Mar 31 02:07:04 UTC 2015 which Chris Wilson from this list had me run kernel kernel 4.0.0-997-generic #201503310205 SMP Tue Mar 31 02:07:04 UTC 2015 however when I attempted to file a bug report at Ubuntu Launchpad it was not accepted so the Ubuntu kernel folks had me switch to kernel 4.2.3-040203-generic #201510030832 SMP Sat Oct 3 12:34:31 UTC 2015 which although is an upstream kernel is what they wanted me to run. The bug report that I've filed on Launchpad is https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1497627 I've attempted to boot into the following Ubuntu upstream kernels: v4.3-rc5-unstable - Boot process would begin but would not complete v4.3-rc4-unstable - same as above v4.3-rc3-unstable - same as above v4.3-rc2-unstable - Same as above v4.3-rc1-unstable - Same as above I also attempted last night to boot into v4.3-rc5-unstable from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D which gave the same results. The boot process would begin but then go to just a black screen without completing. I have either filed or commented on the following bugs also: https://bugs.freedesktop.org/show_bug.cgi?id=75394 https://bugs.freedesktop.org/show_bug.cgi?id=89290 https://bugs.freedesktop.org/show_bug.cgi?id=91495 System info is: Dell Optiplex 780 Bios A15 Ubuntu 14.04.3 LTS Gnome 3.12.2 Am I still the only one who is experiencing this issue? -- Chris KeyID 0xE372A7DA98E6705C 31.11°N 97.89°W (Elev. 1092 ft) 07:57:25 up 11:34, 1 user, load average: 0.37, 0.41, 0.33 Ubuntu 14.04.3 LTS, kernel 4.2.3-040203-generic #201510030832 SMP Sat Oct 3 12:34:31 UTC 2015 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
