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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - GPU hang code 9:0:0x85dffffb reason Hang on rcs0; reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104824">104824</a>
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<th>Summary</th>
<td>GPU hang code 9:0:0x85dffffb reason Hang on rcs0; reset
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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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>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>peter.chubb@data61.csiro.au
</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>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=137012" name="attach_137012" title="copy of /sys/class/drm/card0/error">attachment 137012</a> <a href="attachment.cgi?id=137012&action=edit" title="copy of /sys/class/drm/card0/error">[details]</a></span>
copy of /sys/class/drm/card0/error
I'm running the top-of-tree Linux kernel; revision
1f07476ec143bbed7bf0b641749783b1094b4c4f
The X server randomly hangs; I can't work out what triggers the problem. I'm
not doing anything graphics intensive --- just emacs and xterms. This can
happen anywhere from a few minutes after boot to after several hours; but I
haven't had a full day's work without a hang for a couple of weeks.
The bug is in a Dell laptop, that uses vga_switcheroo to swap between the i915
and an AMD R9 M295X.
dmesg output:
GPU HANG: ecode 9:0:0x85dffffb, in Xorg [2752], reason: Hang on rcs0, action:
reset
[ 1798.822701] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
sta
ck, including userspace.
[ 1798.822702] [drm] Please file a _new_ bug report on bugs.freedesktop.org
agai
nst DRI -> DRM/Intel
[ 1798.822702] [drm] drm/i915 developers can then reassign to the right
componen
t if it's not a kernel issue.
[ 1798.822703] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 1798.822704] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 1798.822708] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 1806.782831] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 1814.846833] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 1822.846846] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 1830.814860] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 1833.878873] [drm] Reducing the compressed framebuffer size. This may lead to
less power savings than a non-reduced-size. Try to increase stolen memory size
if available in BIOS.</pre>
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