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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Screen corruption on Cayman with dpm enabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66932">66932</a>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>Screen corruption on Cayman with dpm enabled
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>g02maran@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>
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<th>Version</th>
<td>DRI CVS
</td>
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<th>Component</th>
<td>DRM/Radeon
</td>
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<th>Product</th>
<td>DRI
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=82448" name="attach_82448" title="dmesg">attachment 82448</a> <a href="attachment.cgi?id=82448&action=edit" title="dmesg">[details]</a></span>
dmesg
When I enable dpm with my 6950 I see major screen corruption. It works fine
with dpm disabled.
The computer does not get completely locked up. The screen flickers but there
is always a pattern in the corruption that stays the same. Sometimes, not
always, I can see and control a corrupted mouse cursor. But the screen is so
corrupted that i can't login or do anything. I can ssh into the computer but it
won't reboot.
I first tried 3.11-rc1 but then did my tests on
<a href="http://cgit.freedesktop.org/~agd5f/linux/?h=drm-fixes-3.11">http://cgit.freedesktop.org/~agd5f/linux/?h=drm-fixes-3.11</a> with latest commit
being a01c34f72e7cd2624570818f579b5ab464f93de2
I have ucode (downloaded 2013-06-15) from
<a href="http://people.freedesktop.org/~agd5f/radeon_ucode/">http://people.freedesktop.org/~agd5f/radeon_ucode/</a>
I compiled the kernel with this.
CONFIG_EXTRA_FIRMWARE="radeon/CAYMAN_mc.bin radeon/CAYMAN_me.bin
radeon/CAYMAN_pfp.bin radeon/CAYMAN_rlc.bin radeon/CAYMAN_smc.bin
radeon/SUMO_uvd.bin"
I did a bisect and found that this commit introduced the corruption:
<a href="http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.11&id=7ad8d0687bb5030c3328bc7229a3183ce179ab25">http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.11&id=7ad8d0687bb5030c3328bc7229a3183ce179ab25</a></pre>
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