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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - X fails to start with Raven Ridge APU and 1440p monitor on DVI"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106149">106149</a>
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<th>Summary</th>
<td>X fails to start with Raven Ridge APU and 1440p monitor on DVI
</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
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
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<th>Reporter</th>
<td>oyvinds@everdot.org
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=138948" name="attach_138948" title="kernel dmesg with lots of drm / amdgpu error">attachment 138948</a> <a href="attachment.cgi?id=138948&action=edit" title="kernel dmesg with lots of drm / amdgpu error">[details]</a></span>
kernel dmesg with lots of drm / amdgpu error
Xorg will not start, boot log stops at lightdm starting and it does not start
with a 1440p monitor connected via DVI.
Ryzen 2400G APU:
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven
Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev c6)
dmesg shows a red line saying:
[drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 100 tries -
tgn10_lock line:566
and a ton of other errors, attached.
xorg error log ends with
[ 128.160] (EE) modeset(0): failed to set mode: Invalid argument
Kernel is 4.15.17. Mesa version is 17.3.6.
A workaround for this error is to use a HDMI cable. That does work.
I can provide more information on this total scandal bug if someone tells me
what to provide and how.</pre>
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