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<body><span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - HiZ on SNB causes GPU hang with WebGL web app"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70740">bug 70740</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>NEEDINFO
</td>
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<td style="text-align:right;">Assignee</td>
<td>idr@freedesktop.org
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<td>kenneth@whitecape.org
</td>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - HiZ on SNB causes GPU hang with WebGL web app"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70740#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - HiZ on SNB causes GPU hang with WebGL web app"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70740">bug 70740</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>Joe,
I just landed a bunch of Sandybridge GPU hang fixes on Mesa master.
Currently we have two known GPU hangs:
- IPEHR = 0x7905 (3DSTATE_DEPTH_BUFFER)
=> <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [snb blorp] GPU hang"
href="show_bug.cgi?id=70151">bug #70151</a> - should be fixed with Mesa master as of today
- IPEHR = 0x0b160001 (MI_SEMAPHORE_MBOX) -
=> <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="show_bug.cgi?id=54226">bug #54226</a> - still unsolved; a kernel issue.
Either /sys/class/drm/card0/error (modern kernels) or
/sys/kernel/debug/dri/0/i915_error_state (older kernels) will tell you which
issue you have. You can decode it with intel_error_decode from
intel-gpu-tools. Or just attach it.
The one that I fixed apparently is much more common, and we've had other
reports of Google Maps triggering it. So most likely, your bug is fixed.
Could you try master? Thanks!
--Ken</pre>
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