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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 --- - [IVB Regression: Apple MacBook Pro] eDP + two any pipes will cause call trace in dmesg"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66952">66952</a>
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</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB Regression: Apple MacBook Pro] eDP + two any pipes will cause call trace in dmesg
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>yangweix.shui@intel.com
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=82471" name="attach_82471" title="dmesg: eDP + two any cause call trace">attachment 82471</a> <a href="attachment.cgi?id=82471&action=edit" title="dmesg: eDP + two any cause call trace">[details]</a></span>
dmesg: eDP + two any cause call trace
Environment:
--------------------
Kernel: (drm-intel-next-queued)50b44a449ff1a19712ebc36ffccf9ac0a68033bf
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Wed Jun 5 13:34:33 2013 +0200
drm/i915: clear DPLL reg when disabling i9xx dplls
Good commit: 328d8e829b9a05814af4722c1091d62c5533c4f8
lspci:
--------------------
00:02.0 VGA compatible controller: Intel Corporation Device 0162 (rev 09)
Description:
--------------------
With eDP and two any pipes plugged in, there's "call trace" in dmesg when
machine resumed from booting. If I plugged each pipe only, there's not this
issue. Our Apple MacBook Pro support: HDMI , mini-DP-to-HDMI, mini-DP-to-VGA,
mini-DP-to-DVI and mini-DP-to-DP.
Bisect is on the way, we will update the bug ASAP. This machine is not support
kexec currently, we need take much more time by manual. If you have any idea
about this regression, please comment. THX.
Reproduce step:
--------------------
1. plugged two any pipes in
2. reboot
3. check the dmesg when machine boot up</pre>
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