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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 - Broken colors on RX 5700 with adjusted brightness"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112148">112148</a>
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<th>Summary</th>
<td>Broken colors on RX 5700 with adjusted brightness
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg 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>not set
</td>
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<th>Priority</th>
<td>not set
</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>mlichvar@redhat.com
</td>
</tr></table>
<p>
<div>
<pre>I have an RX 5700 card connected to a monitor which doesn't display dark colors
very well. The brightness needs to be adjusted in software. I use the xcalib
tool like this:
xcalib -c
xcalib -a -b 10 -co 90
This displays dark colors well, but some images/videos have weird artifacts.
After playing with a color picker it looks like colors that have the green
component zero are much brighter than they should be. For example, color
#750000 is much brighter than #750100. I'll attach some images that show the
problem.
When the monitor is connected to a different computer (with a non-AMD GPU)
configured with the same xcalib commands, the problem disappears, so it seems
to be specific to the hardware/driver.
Please let me know if you need more information.
Installed packages:
kernel-5.3.6-300.fc31.x86_64
xorg-x11-server-Xorg-1.20.5-7.fc31.x86_64
xorg-x11-drv-amdgpu-19.1.0-1.fc31.x86_64
mesa-dri-drivers-19.2.0-1.fc31.x86_64
xcalib-0.8-24.fc31.x86_64</pre>
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</p>
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