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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 - [amdgpu/displayport] Blackscreen on native resolution"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107823">107823</a>
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<th>Summary</th>
<td>[amdgpu/displayport] Blackscreen on native resolution
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>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/AMDgpu
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>jan.burgmeier@unicon-software.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141442" name="attach_141442" title="dmesg with drm.debug=0x1e log_buf_len=1M">attachment 141442</a> <a href="attachment.cgi?id=141442&action=edit" title="dmesg with drm.debug=0x1e log_buf_len=1M">[details]</a></span>
dmesg with drm.debug=0x1e log_buf_len=1M
Hi,
there seems to be some monitor/graphics card combination which lead to a black
screen.
In my case it is the native (1920x1080) resolution of a NEC EA223WM monitor and
a [AMD/ATI] Carrizo (rev 88). Setting any other mode than the native one via
xrandr turns the monitor on. Setting it back to the native one results in a
black screen.
It seems unrelated to XOrg as there is also a black screen on the terminal and
during boot.
I do not see any errors in dmesg or XOrg log
The error does not occur with module parameter dc=0
Environment:
Kernel: 4.19.0-rc2 (git master)
Mesa: 18.1.6
XOrg: 1.20.1
amdgpu-ddx: 18.0.99 (git master)</pre>
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