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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 --- - [regression] Resolution crippled for HD4870X2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=57741">57741</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[regression] Resolution crippled for HD4870X2
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dev@blackshard.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<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=70837" name="attach_70837" title="output of lspci -v">attachment 70837</a> <a href="attachment.cgi?id=70837&action=edit" title="output of lspci -v">[details]</a></span>
output of lspci -v
Using in-kernel DRM with my Radeon HD4870X2, resolutions above 1024x768 no
longer function. Selecting a higher resolution results in a blank, black
screen. Sometimes my monitor reports 'frequency out of range', but usually it
does not. Xorg otherwise functions as normal - if I blindly pull up a terminal
and switch resolution via xrandr, I regain my display. Various combinations of
xorg.conf options, including no xorg.conf at all, do not fix the problem.
This problem surfaced with v3.7.0-rc5, and is not fixed the version of DRM
present in current kernel git (3.7.0-rc7+). The problematic file is
drivers/gpu/drm/radeon/atombios_crtc.c - using the version of this file
included in 3.7.0-rc4 resolves my problem.
Steps to Reproduce:
Install kernel version > 3.7.0-rc4 on relevant hardware
startx
Actual Results:
Blank Screen
Expected Results:
X should display my desktop, rather than shutting off my display.
Platform:
Linux
Xorg 1.8.2*
xf86-video-ati 6.14.1*
libdrm 2.4.26*
mesalib 7.11.1*
* Version of these packages does not appear relevant to this bug
Additional Information:
See attached lscpi for my hardware
dmesg and Xorg.0.log have not been attached, as their output is identical
between working and non-working versions of this file.
I will happily provide any additional information or testing that would help
resolve this bug.</pre>
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