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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 --- - Second screen unusable on R7 250E"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79173">79173</a>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Second screen unusable on R7 250E
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>major
</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>ancoron@chaoslayer.de
</td>
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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>7.7 (2011)
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/Radeon
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Hardware:
- 1x Sapphire Ultimate R7 250 (1002:683f, 1x DVI, 1x HDMI, 1x DisplayPort,
passive)
- 2x Dell 3007-WFP HC (30", 2560x1600 @ 60)
Software:
- Ubuntu 14.04
- Kernel 3.13.0-27-generic
- linux-firmware package version 1.127.2
Symptom:
- DVI connection works just fine.
- HDMI or DisplayPort just produces a garbled display, although the monitors
are correctly detected by the driver in any case.
I've then tried to use the later versions provided by the xorg-edgers Ubuntu
PPA with the exact same result.
Also, there are no errors or warnings in the Xorg logs that would point to a
problem.
I probably should note that the monitors only have dual-head DVI connectors, so
for connecting DisplayPort, I used a DisplayPort-to-DVI cable and for HDMI, I
used an HDMI cable plus an HDMI-to-DVI adapter. As the result is exactly the
same in both cases, I expect that the cabling is fine. Also when connecting the
second monitor to DVI instead of the first one its also fine, so it's not a
monitor issue either.</pre>
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</p>
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