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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB]<3>[drm:ironlake_disable_pch_transcoder] *ERROR* failed to disable transcoder 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65700">65700</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>xunx.fang@intel.com, yangweix.shui@intel.com
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SNB]<3>[drm:ironlake_disable_pch_transcoder] *ERROR* failed to disable transcoder 0
</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>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</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>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=80758" name="attach_80758" title="dmesg">attachment 80758</a> <a href="attachment.cgi?id=80758&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Sandybridge
Kernel: drm-intel-fixes 76c4259a3ad6af9f4d63b5d3bcc8088844c0c59c
Bug detailed description:
-------------------------
It happens on sandybridge with -driq kernel and -fixes kernel.
I can't catch a good commit.
CPU:Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz.
Boot system, run dmesg -r | egrep "<[1-4]>" |grep drm.
<4>[ 1.179153] WARNING: at drivers/gpu/drm/i915/intel_display.c:979
ironlake_crtc_disable+0xbe/0x79b [i915]()
<4>[ 1.179157] Modules linked in: i915(+) video button drm_kms_helper drm
mperf freq_table
<4>[ 1.179159] CPU: 1 PID: 1227 Comm: udevd Not tainted
3.10.0-rc5_drm-intel-fixes_76c425_20130613_+ #3879
<4>[ 1.179231] [<ffffffffa0013cc9>] ?
drm_mode_set_config_internal+0x19/0x40 [drm]
<4>[ 1.179234] [<ffffffffa004ab8a>] ? drm_fb_helper_set_par+0x54/0x9a
[drm_kms_helper]
<4>[ 1.179235] [<ffffffffa004ab36>] ?
drm_fb_helper_initial_config+0x459/0x459 [drm_kms_helper]
<4>[ 1.179254] [<ffffffffa004aa87>] ?
drm_fb_helper_initial_config+0x3aa/0x459 [drm_kms_helper]
<4>[ 1.179258] [<ffffffffa0012532>] ? drm_mode_config_reset+0xad/0xcc [drm]
<4>[ 1.179279] [<ffffffffa000e37d>] ? drm_get_minor+0x1b5/0x20a [drm]
<4>[ 1.179284] [<ffffffffa000fd2d>] ? drm_get_pci_dev+0x14d/0x254 [drm]
<3>[ 1.231224] [drm:ironlake_disable_pch_transcoder] *ERROR* failed to
disable transcoder 0
Reproduce steps:
----------------
1. boot system
2. dmesg -r | egrep "<[1-4]>" |grep drm</pre>
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