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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 - [drm:skl_set_cdclk] *ERROR* failed to inform PCU about cdclk change"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99345">99345</a>
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<th>Summary</th>
<td>[drm:skl_set_cdclk] *ERROR* failed to inform PCU about cdclk change
</td>
</tr>
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<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>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
</tr>
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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
</td>
</tr>
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<th>Reporter</th>
<td>ryabinin.a.a@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=128854" name="attach_128854" title="dmesg">attachment 128854</a> <a href="attachment.cgi?id=128854&action=edit" title="dmesg">[details]</a></span>
dmesg
Commands
# xset dpms force suspend && xset dpms force on
sometimes trigger the following error in dmesg:
[drm:skl_set_cdclk] *ERROR* failed to inform PCU about cdclk change
Sometimes "*ERROR* CPU pipe A FIFO underrun" follows, in that case screen
remains black. See <a class="bz_bug_link
bz_status_NEW "
title="NEW - [KBL] [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun"
href="show_bug.cgi?id=99344">https://bugs.freedesktop.org/show_bug.cgi?id=99344</a>
dmesg with drm.debug=1e attached.
Kernel version - 4.9.2
Hardware - Dell XPS 13 9360</pre>
</div>
</p>
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