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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 --- - radeon regression after update to kernel 3.13.6 (stable)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77930">77930</a>
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</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>radeon regression after update to kernel 3.13.6 (stable)
</td>
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<th>Severity</th>
<td>major
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>raziel_theripper@yahoo.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>
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<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Radeon
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=97956" name="attach_97956" title="lspci">attachment 97956</a> <a href="attachment.cgi?id=97956&action=edit" title="lspci">[details]</a></span>
lspci
I have an Asus X550 series laptop with an AMD APU A8-5550M.
The integrated GPU is a 8550G and the dGPU is a 8670M.
After upgrading the kernel from 3.13.6 to 3.13.7 the machine becomes unbootable
and it freezes(black screen, possibly X not able to start).
Setting radeon.runpm=0 at boot time doesn't help.
After doing a bisect I've found the following commit to be the problematic one:
[drm/radeon] fix runpm disabling on non-PX harder.
Also, I have to mention that the bug seems to be reproducible on similar
hardware configurations, see: <a href="http://forums.gentoo.org/viewtopic-p-7529160.html">http://forums.gentoo.org/viewtopic-p-7529160.html</a></pre>
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