[Intel-gfx] Video lockup

[Chris Wilson]

On Wed, Apr 01, 2015 at 10:51:03AM -0500, Chris wrote:
> I started following this list due to the fact that I was getting lockups
> with errors reported in my syslog like this:
> 
> [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render
> ring idle
> 
> I've submitted a bug report at Ubuntu Launchpad and added to the bug
> report at freedesktop.org both seem to be in a state of hiatus right now
> as I haven't seen anything being done on either in quite awhile. Based
> on a a recommendation from Daniel Vetter I started running the latest
> drm kernel from
> http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/
> 
> I installed 4.0.0-997-generic #201503201505 SMP Fri Mar 20 15:07:05 UTC
> 2015 x86_64 x86_64 x86_64 GNU/Linux on 27 March at 7:38am. It seemed to
> run great, I was feeling pretty good that the bug or whatever was
> finally fixed until last night, 31 March at 21:20 I was browsing with
> Firefox I noticed that the seconds on my clock had stopped even though
> the mouse continued to be movable. I could not switch windows as usual
> when this happens. I saw the below in my syslog after I rebooted however
> I was at the beginning of the boot process and I have no idea what it
> means anyway.
> 
> Mar 31 21:23:04 localhost kernel: [395103.520038] WARNING: CPU: 1 PID:
> 14205 at /home/kernel/COD/linux/drivers/gpu/drm/drm_irq.c:1142
> drm_wait_one_vblank+0x12f/0x180 [drm]()
> Mar 31 21:23:04 localhost kernel: [395103.520040] vblank wait timed out
> on crtc 0
> 
> There was no sign of the 'hangcheck...' error in last nights lockup. I
> downloaded and installed kernel 4.0.0-997-generic #201503310205 SMP Tue
> Mar 31 02:07:04 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux. Do I just keep
> installing the latest kernel until the problem goes away or is there
> anything else I can do to try and help figure out what the problem is?
> Any information about my system I can provide? I'll do whatever it
> takes. This having to reboot every couple of days or having the system
> lockup at inopportune times is killing me.

It's a different class of bug. At a rough guess you want to update
xserver-xorg-video-intel instead this time.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre