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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT ppgtt]webglc cases sporadically cause GPU hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83916">83916</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BYT ppgtt]webglc cases sporadically cause GPU hang
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=106358" name="attach_106358" title="dmesg">attachment 106358</a> <a href="attachment.cgi?id=106358&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: BYT
Libdrm: (master)libdrm-2.4.56-21-g8c2ae1695913990cbe6c6a8aa294f354eba33bd0
Mesa: (master)dbc2d81d2ba12354876eb67c79e8a71e57e97f3c
Xserver:(master)xorg-server-1.16.0-176-gd3427717f2c6a473dc3d20631dff653e4e37228e
Xf86_video_intel:(master)2.99.916-39-g11444619457aa8121efc937291f1d944ac42265d
Libva: (master)e0d25ece01e7aba819c910e98c4fb4706cdab055
Libva_intel_driver:(master)bc2e06ef0f89b264fe968fbff4f06e425385c3d8
Kernel: (drm-intel-nightly)43df30da20447e2856b2761215ff274886a9f931
Bug detailed description:
---------------------------
Run all Webglc cases, GPU hang appears sporadically. It happens on different
case when run multiple cycles. Fail rate:2/3.
If this issue occurs, run reboot, system is no response.
Add i915.enable_ppgtt=1 on latest nightly kernel, run 3 cycles, it works well.
Reproduce steps:
-------------------------
1. xinit
2. go to
<a href="https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/webgl-conformance-tests.html">https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/webgl-conformance-tests.html</a>
run all webglc cases.</pre>
</div>
</p>
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