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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i915] eDP cannot light up after waking up from suspend the second time."
href="https://bugs.freedesktop.org/show_bug.cgi?id=112407">112407</a>
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<th>Summary</th>
<td>[i915] eDP cannot light up after waking up from suspend the second time.
</td>
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<th>Product</th>
<td>DRI
</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>critical
</td>
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<th>Priority</th>
<td>not set
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>yvonnex.yang@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=146033" name="attach_146033" title="dmesg log">attachment 146033</a> <a href="attachment.cgi?id=146033&action=edit" title="dmesg log">[details]</a></span>
dmesg log
Platform: CML Laptop with ALC711+ ALC1308+ ALC715 in SDW mode
Reproduce Steps:
1.Do system reboot with HDMI/DP external port connected.
2.Enter suspend via "sudo rtcwake -m mem -s 10", and unplug HDMI/DP external
port during suspend.
3.Enter suspend again after waking up from suspend in step2
Frequency:100%
Expected result:
After step3, eDP should light up after waking up from suspend.
Actual result:
After step3, eDP cannot light up after waking up from suspend.
Tested it with
linux-image-unsigned-5.4.0-050400-generic_5.4.0-050400.201911242031_amd64.deb,
issue can still be reproduced.
With HDA legacy driver, same symptom still exist.
Need to fix in graphics driver.</pre>
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