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<body><span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT/BSW]igt/drv_hangman/kms_flip/gem_reset_stats sporadically causes *ERROR* Timed out: waiting for Render to ack"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85684">bug 85684</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>NEW
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT/BSW]igt/drv_hangman/kms_flip/gem_reset_stats sporadically causes *ERROR* Timed out: waiting for Render to ack"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85684#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT/BSW]igt/drv_hangman/kms_flip/gem_reset_stats sporadically causes *ERROR* Timed out: waiting for Render to ack"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85684">bug 85684</a>
from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
<pre># cat /sys/module/i915/parameters/enable_ppgtt
0
Add i915_enable.ppgtt=1, it still happens.
igt_gem_workarounds_reset also has this error.
Dmesg:
<6>[ 8678.817582] [drm] stuck on render ring
<6>[ 8678.824135] [drm] GPU HANG: ecode 0:0x97f4fffe, in gem_workarounds
[20809], reason: Ring hung, action: reset
<6>[ 8678.824143] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
<6>[ 8678.824146] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
<6>[ 8678.824148] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
<6>[ 8678.824151] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
<6>[ 8678.824153] [drm] GPU crash dump saved to /sys/class/drm/card0/error
<3>[ 8678.824242] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<6>[ 8678.826343] [drm] Simulated gpu hang, resetting stop_rings
<5>[ 8678.826347] drm/i915: Resetting chip after gpu hang</pre>
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