[Intel-gfx] Video freezing after activating XScreensaver

[Daniel Vetter]

On Tue, Oct 13, 2015 at 08:56:52AM -0500, Chris wrote:
> 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

Known problem and we never managed to fix it. The first time it happens a
workaround should kick in, which should prevent any future freezes (until
you reboot at least).

If freezes still happen after that there's another bug on top.
-Daniel

> 
> 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
> 
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> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch