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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>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Black screen after resume from s2ram"
href="https://bugs.freedesktop.org/show_bug.cgi?id=59057">59057</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Black screen after resume from s2ram
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>pontus.fuchs@gmail.com
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
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<th>Component</th>
<td>Driver/nouveau
</td>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Starting with 3.8rc1 I get a black screen when resuming after suspend.
The kernel is alive because I can switch to VT1 and reboot with
ctrl-alt-delete.
I bisected the problem down to this commit:
186ecad21: drm/nv50/disp: move remaining interrupt handling into core
Hardware is 8400M GS (10de:0427) in a Dell XPS M1330.
I see this in my kernel log after resume:
nouveau E[ PFB][0000:01:00.0] trapped read at 0x002001a020 on
channel 0x00007b23 SEMAPHORE_BG/PFIFO_READ/00 reason: PAGE_NOT_PRESENT
nouveau E[ 1177] failed to idle channel 0xcccc0000
[TTM] Failed to expire sync object before buffer eviction
[TTM] Failed to expire sync object before buffer eviction
[TTM] Failed to expire sync object before buffer eviction</pre>
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</p>
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