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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Dual monitor setup does not initialize"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89155">89155</a>
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<th>Summary</th>
<td>Dual monitor setup does not initialize
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Radeon
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>adam.reichold@t-online.de
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=113508" name="attach_113508" title="journalctl -b | grep "\[drm"">attachment 113508</a> <a href="attachment.cgi?id=113508&action=edit" title="journalctl -b | grep "\[drm"">[details]</a></span>
journalctl -b | grep "\[drm"
I am running Arch Linux on an AMD A6-3500 with Radeon HD 6530D graphics on an
Gigabyte A55M-S2V mainboard. I just received updated X server to version 1.17.1
together with a rebuilt version 7.5.0 of the XFree86 ATI driver with the kernel
staying at 3.18.6.
I do have two Samsung monitors connected to the system, one via DVI and one via
VGA. This setup always initialized unreliably and I had to manually add modes
for the VGA-connected monitor using
xrandr --newmode "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059
1089 -hsync +vsync
xrandr --addmode VGA-0 "1680x1050_60.00"
xrandr --output VGA-0 --mode "1680x1050_60.00"
for it to work at all. But after the update described above, the two monitors
never initialize properly anymore. Before the update, I sometimes had to
power-cycle (meaning switch off power not just a reboot) but it did eventually
work after two or three tries.
The reason I am reporting this as a Radeon DRM issue instead of an X server
problem is that my system log contains errors from the DRM driver about
"channel eq" and "clock recovery". I attached those logs grepped for "[drm".
Thank for your help and please tell me if I can provide any further information
to help diagnose this.</pre>
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