[Bug 75394] System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75394

--- Comment #127 from caicai <caizp2008 at gmail.com> ---
(In reply to caicai from comment #126)
> hi ，I think I had already solved, have been tested for 3 days, not hanging
> to death, the same test before will be out within 15 minutes.I also use the
> function of DRI, performance is little.
> 
> I added /etc/X11/xorg.conf.d/20-intel.conf
> Section "Device"
> Identifier "Intel Graphics"
> Driver "intel"
> Option "DRI" "True"
> Option "TearFree" "true"
> #Option "AccelMethod" "sna"
> Option "VSync"         "False"
> Option "PageFlip"      "False"
> Option "RelaxedFencing" "False"
> Option "SwapbuffersWait" "False"
> EndSection
> 
> and my kernel cmd parameters: 
> Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-49-generic
> root=UUID=7ea7f693-5856-4b3d-9271-55a9061950e1 ro mem=2G i915.semaphores=1
> intel_idle.max_cstate=1 i915.enable_rc6=0 
> 
> But Dmesg info when there also with { [drm:i915_hangcheck_elapsed] *ERROR*
> Hangcheck timer elapsed... render ring idle } again , but the system did not
> hang dead, I don't know why, which friends with same problem can try that
> again.

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