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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 --- - [Baytrail-M] Boot up with "[drm:intel_pipe_config_compare] *ERROR* mismatch in clock" and "Call Trace""
href="https://bugs.freedesktop.org/show_bug.cgi?id=69248">69248</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>[Baytrail-M] Boot up with "[drm:intel_pipe_config_compare] *ERROR* mismatch in clock" and "Call Trace"
</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>yangweix.shui@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>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=85687" name="attach_85687" title="dmesg: boot up with error and call trace">attachment 85687</a> <a href="attachment.cgi?id=85687&action=edit" title="dmesg: boot up with error and call trace">[details]</a></span>
dmesg: boot up with error and call trace
Environment:
--------------------
Kernel: (drm-intel-next-queued)6c4a8962a4a078cacfc8eb5d4bd79f6343b8cd7a
Author: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>>
Date: Tue Sep 10 14:54:42 2013 -0700
drm/i915/vlv: re-enable hotplug detect based probing on VLV/BYT
lspci:
--------------------
00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev 0a)
Description:
--------------------
Test with latest -next-queued kernel, there's call trace and error in dmesg. I
tested other IVB platform, there's not this issue. Older kernels also
reproduceable. We are testing Baytrail machine recently, and it might not be a
regression. I append the dmesg here, and if there's something needed, I'm glad
to support you.
Error:
--------------------
[ 2.710082] [drm:valleyview_enable_rps] *ERROR* GT fifo had a previous error
10
[ 2.771175] [drm:intel_pipe_config_compare] *ERROR* mismatch in clock
(expected 138780, found 0)
Call Trace:
--------------------
[ 2.771165] [drm:i9xx_crtc_clock_get], Unknown DPLL mode 00000000 in
programm
ed mode
[ 2.771175] [drm:intel_pipe_config_compare] *ERROR* mismatch in clock
(expect
ed 138780, found 0)
[ 2.771178] ------------[ cut here ]------------
[ 2.771221] WARNING: CPU: 1 PID: 1151 at
drivers/gpu/drm/i915/intel_display.c
:8783 check_crtc_state+0x6d6/0x71d [i915]()
[ 2.771222] pipe state doesn't match!
[ 2.771229] Modules linked in: i915(+) video button drm_kms_helper drm
acpi_c
pufreq mperf freq_table
[ 2.771233] CPU: 1 PID: 1151 Comm: udevd Not tainted
3.11.0-rc7_drm-intel-nex
t-queued_6c4a89_20130911_+ #8370
[ 2.771237] 0000000000000000 0000000000000009 ffffffff816ee0bb
ffff88006feb5
2a8
[ 2.771240] ffffffff81032101 ffff88006feb52a0 ffffffffa008a8a5
0000000000000
000
[ 2.771242] ffff8800742a7000 ffff880004d58800 ffff88006feb5328
ffff8800742a7
6d0
[ 2.771243] Call Trace:
[ 2.771251] [<ffffffff816ee0bb>] ? dump_stack+0x41/0x51
[ 2.771256] [<ffffffff81032101>] ? warn_slowpath_common+0x73/0x8b
.........
.........</pre>
</div>
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