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<base href="https://bugs.freedesktop.org/" />
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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 --- - Screen corruption/lockups on Northern Islands (BARTS) with dpm active"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67825">67825</a>
</td>
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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/lockups on Northern Islands (BARTS) with dpm active
</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>Alexander@Schwarz-Regensburg.de
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>DRI CVS
</td>
</tr>
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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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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=83713" name="attach_83713" title="Greps from dmesg for "drm" and "radeon"">attachment 83713</a> <a href="attachment.cgi?id=83713&action=edit" title="Greps from dmesg for "drm" and "radeon"">[details]</a></span>
Greps from dmesg for "drm" and "radeon"
I'm receiving massive screen corruptions on my Radeon HD 6870 when I use dpm on
an rc1/2/3/4 kernel with the following symptoms:
There's flickering all over the screen, artifacts and after trying to open
anything related to graphics (glxgears, animated menus in KDE, etc...) the
machine freezes and can only be revived with a hard reset. Sometimes the
machine doesn't even get so far and freezes immediately before. This is
accompanied by a black screen or blue lines on the screen.
The huge issue is: there's absolutely no error in dmesg and dpm is also
automatically set in power_method
I'm including grep'd dmesg's for "drm" and "radeon" anyways, to illustrate that
everything seems to load fine.
More information about the card and my system: XFX Radeon HD 6870 Black Edition
with stock bios on an Arch Linux 64 bit system.
I'm using the newest mesa-git, libdrm, xf86-video-ati-git and ati-dri-git.
It's nearly impossible to gather more information than dmesg, because the
system is extremely unstable when using dpm.
When I'm NOT setting radeon.dpm=1 the system boots fine, has 3D acceleration
and I've not a single issue with my graphics stack.</pre>
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</p>
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