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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 - displayport connected monitor doesn't initialize display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104205">104205</a>
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<th>Summary</th>
<td>displayport connected monitor doesn't initialize display
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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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>Driver/AMDgpu
</td>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
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<th>Reporter</th>
<td>magnade@gmail.com
</td>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
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<div>
<pre>I have a LG 29UB55-B 21:9 monitor connected via DisplayPort to a Radeon R7 370
card
after boot when xorg loads 99% of the time the monitor won't see a signal and
goes to sleep
once its woken back up by its power button it sees the normal screen at its
native res of 2560x1080
I also see I assume the same problem if i change resolution down to 1920x1080
its fine but switch back to 2560x1080 and screen goes to sleep with no signal
wake it back up and fine again at 2560
I see the below in dmesg:
[ 6.400479] [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery
reached max voltage
[ 6.400523] [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery
failed
kernel is 4.14.4 currently it's been going on since I got the monitor
I don't recall what version that was.
xorg is on 1.19.5
amdgpu driver is 1.4.0
also tried the radeon driver and acts same
haven't tried binary drivers
no errors in xorg log</pre>
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