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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - REGRESSION: GPU hangs when enable_fbc=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98213">98213</a>
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<th>Summary</th>
<td>REGRESSION: GPU hangs when enable_fbc=1
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>gwhite@kupulau.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=127238" name="attach_127238" title="dmesg">attachment 127238</a> <a href="attachment.cgi?id=127238&action=edit" title="dmesg">[details]</a></span>
dmesg
This is on Skylake/4.9pre-rc1.
Enabling fbc (enable_fbc=1) on skylake causes near-constant GPU hangs/resets.
This is new since 4.8 final. Booting with enable_fbc=0 or enable_fbc=-1 works.
I understand this is probably unsupported, but thought it might be useful to
point this out.
dmesg and cpuinfo attached. This was right after boot with graphical login
started. The hangs continue with the same signature after my desktop
environment starts.</pre>
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