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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 --- - [HSW Desktop VGA bisected]WARNING:pipe state mismatch:mismatch in pipe_bpp (expected 24, found 0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69691">69691</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>[HSW Desktop VGA bisected]WARNING:pipe state mismatch:mismatch in pipe_bpp (expected 24, found 0)
</td>
</tr>
<tr>
<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>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cancan.feng@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>System Environment:
--------------------------------------------
Kernel: (drm-intel-next-queued)42571aefafb1d330ef84eb29418832f72e7dfb4c
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Fri Sep 6 23:29:00 2013 +0300
drm/i915: Add support for pipe_bpp readout
Bug detailed description:
--------------------------------------------
System booting up with VGA will result in "*ERROR* mismatch in pipe_bpp
(expected 24, found 0)", this is a regression, I have bisected it. I will
attach the whole dmesg of 42571a, in which you can find the details of Call
Trace.
Bisect result:
--------------------------------------------
42571aefafb1d330ef84eb29418832f72e7dfb4c is the first bad commit
commit 42571aefafb1d330ef84eb29418832f72e7dfb4c
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Fri Sep 6 23:29:00 2013 +0300
drm/i915: Add support for pipe_bpp readout
Reproduce steps:
--------------------------------------------
1. plug in VGA
2. boot machine</pre>
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