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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - kernel: [drm] GPU HANG: ecode 9:0:0xfffffffe, reason: Hang on rcs0, action: reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104545">104545</a>
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<tr>
<th>Summary</th>
<td>kernel: [drm] GPU HANG: ecode 9:0:0xfffffffe, reason: Hang on rcs0, action: reset
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>reescf@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=136624" name="attach_136624" title="GPU crash dump from /sys/class/drm/card0/error as requested">attachment 136624</a> <a href="attachment.cgi?id=136624&action=edit" title="GPU crash dump from /sys/class/drm/card0/error as requested">[details]</a></span>
GPU crash dump from /sys/class/drm/card0/error as requested
I'm filing this as a new bug in accordance with instructions found in the
journal from the kernel following a GPU hang.
Symptoms: GPU hangs sometimes when running on battery. Hangs occur only when
the laptop is left awake without interaction for a little bit (e.g. while
making a cup of tea or popping to the loo). Hangs do not occur predictably,
however, and these conditions mostly result in no hang. When a hang does occur,
the machine is unresponsive on return and cannot be put to sleep or woken etc.
Screen is blank/black. Following hard reset, messages such as the following can
be found in the journal:
Ion 09 03:17:16 MyComputer kernel: [drm] GPU HANG: ecode 9:0:0xfffffffe,
reason: Hang on rcs0, action: reset
Ion 09 03:17:16 MyComputer kernel: [drm] GPU hangs can indicate a bug anywhere
in the entire gfx stack, including userspace.
Ion 09 03:17:16 MyComputer kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Ion 09 03:17:16 MyComputer kernel: [drm] drm/i915 developers can then reassign
to the right component if it's not a kernel issue.
Ion 09 03:17:16 MyComputer kernel: [drm] The gpu crash dump is required to
analyze gpu hangs, so please always attach it.
Ion 09 03:17:16 MyComputer kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Ion 09 03:17:16 MyComputer kernel: i915 0000:00:02.0: Resetting rcs0 after gpu
hang
The last is repeated many times. As the crash dump does not typically survive a
reboot, a dump was collected using
dmesg -w | awk '/GPU crash dump saved to \/sys\/class\/drm\/card0\/error/
{system("cat /sys/class/drm/card0/error | bzip2 > error.bz2")}'
as suggested at <a href="https://bbs.archlinux.org/viewtopic.php?pid=1753566#p1753566">https://bbs.archlinux.org/viewtopic.php?pid=1753566#p1753566</a>.
Since the dump is not especially large, I'm attaching the decompressed version.
I would be happy to provide further information on request, provided I can
figure out how to do whatever would be helpful.</pre>
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