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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Freeze after suspend/resume with kernel 5.0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111399">111399</a>
</td>
</tr>
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<th>Summary</th>
<td>Freeze after suspend/resume with kernel 5.0
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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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>
</tr>
<tr>
<th>Reporter</th>
<td>vl4d1m1r37@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=145058" name="attach_145058" title="blackscreen bug log">attachment 145058</a> <a href="attachment.cgi?id=145058&action=edit" title="blackscreen bug log">[details]</a></span>
blackscreen bug log
System: HP 15-bw660ur
GPU: Radeon 520 (Sun XT)
Screen freezes after resuming from suspend. Here is discussion of this bug -
<a href="https://bugs.archlinux.org/task/61950">https://bugs.archlinux.org/task/61950</a>.
I made a bisection in branch linux-5.0.y between the tags v5.0-rc1 and 4.20. I
found that there are two bugs with the screen after resuming from suspend. The
first bug is the one that is present in the kernel v.5 now and earlier to
version 5.0-rc1. There is a bug with amdgpu_job_timedout in the log. The second
is the black screen after resuming from suspend and the absence of the
amdgpu_job_timedout error in the log.
The second bug first appears in commit
[262485a50fd4532a8d71165190adc7a0a19bcc9e] drm/amd/display: Expand dc to use
16.16 bit backlight.
The first bug with amdgpu_job_timedout first appears in the commit
[106c7d6148e5aadd394e6701f7e498df49b869d1] drm/amdgpu: abstract the function of
enter/exit safe mode for RLC.
During the bisect searching for the first error, I went through the following
stages sequentially: good (resuming from suspend was successful), error 2,
good, error 2, error 1.</pre>
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