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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lenovo ThinkPad X1 Carbon GPU hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97423">97423</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Lenovo ThinkPad X1 Carbon GPU hang
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<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>mark.hedges.data@gmail.com
</td>
</tr>
<tr>
<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=125931" name="attach_125931" title="GPU crash dump">attachment 125931</a> <a href="attachment.cgi?id=125931&action=edit" title="GPU crash dump">[details]</a></span>
GPU crash dump
GPU hangs when using LibreOffice Writer. Always happens every once in a while,
while typing. It goes out to lunch for 15 seconds and then comes back when the
chip resets. System does not respond at all during that time. I lose the
keystrokes in the meantime. It seems to be only on this one document... maybe
a weird font rendering issue?
Tried adding intel_iommu=igfx_off to boot params but that did not help, so I
removed that option for this test.
`uname -m` x86_64
`uname -r` 4.6.0-1-rt-amd64
Linux: Debian Stretch
Machine: Lenovo X1 Carbon 4th gen
Display: Built-in 14" WQHD 2560x1440 IPS, 300 nits
Batch buffer: Attached
dmesg debug: Attached (using "drm.debug=0x1e log_buf_len=1M")
Syslog excerpt:
===========================================
Aug 20 13:51:10 walnut kernel: [ 353.815999] [drm] stuck on render ring
Aug 20 13:51:10 walnut kernel: [ 353.816385] [drm] GPU HANG: ecode
9:0:0x86dffffd, in Xorg [2650], reason: Ring hung, action: reset
Aug 20 13:51:10 walnut kernel: [ 353.816389] [drm] GPU hangs can indicate a
bug anywhere in the entire gfx stack, including userspace.
Aug 20 13:51:10 walnut kernel: [ 353.816392] [drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
Aug 20 13:51:10 walnut kernel: [ 353.816394] [drm] drm/i915 developers can
then reassign to the right component if it's not a kernel issue.
Aug 20 13:51:10 walnut kernel: [ 353.816396] [drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
Aug 20 13:51:10 walnut kernel: [ 353.816398] [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Aug 20 13:51:10 walnut kernel: [ 353.818723] drm/i915: Resetting chip after
gpu hang
Aug 20 13:51:12 walnut kernel: [ 355.816648] [drm] RC6 on
===========================================</pre>
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