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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT] Media forcewake timeout with no displays connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75895">75895</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BYT] Media forcewake timeout with no displays connected
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>imre.deak@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=95310" name="attach_95310" title="dmesg for media forcewake lockup">attachment 95310</a> <a href="attachment.cgi?id=95310&action=edit" title="dmesg for media forcewake lockup">[details]</a></span>
dmesg for media forcewake lockup
I get the lockup in the attached dmesg by just booting -nightly without any
display connected on my Bayley Bay B0. Sometimes the 'waiting for the old ack
to clear' just times out and I manage to get to the shell, sometimes one of the
__raw_i915_read32(dev_priv, FORCEWAKE_ACK_MEDIA_VLV); reads in
__vlv_force_wake_get() will hard lock the machine, as in the attached dmesg.</pre>
</div>
</p>
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