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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75394#c127">Comment # 127</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75394">bug 75394</a>
from <span class="vcard"><a class="email" href="mailto:caizp2008@gmail.com" title="caicai <caizp2008@gmail.com>"> <span class="fn">caicai</span></a>
</span></b>
<pre>(In reply to caicai from <a href="show_bug.cgi?id=75394#c126">comment #126</a>)
<span class="quote">> 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.</span ></pre>
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