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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89055#c41">Comment # 41</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89055">bug 89055</a>
from <span class="vcard"><a class="email" href="mailto:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> <span class="fn">cprigent</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=122960" name="attach_122960" title="APL-kms_pipe_crc_pipe-c.log">attachment 122960</a> <a href="attachment.cgi?id=122960&action=edit" title="APL-kms_pipe_crc_pipe-c.log">[details]</a></span>
APL-kms_pipe_crc_pipe-c.log
Reproduced on APL when executing igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c
[ 72.109585] WARNING: CPU: 0 PID: 1639 at
/home/shared/kernels/drm-intel-nightly/drivers/gpu/drm/i915/intel_pm.c:3647
skl_update_other_pipe_wm+0x172/0x180 [i915]
[ 72.109586] WARN_ON(!wm_changed)
Hardware
Platform: Broxton P A0 Platform
CPU Name : Intel(R) @ 1.2 GHz (family: 6, model: 92, stepping: 8) 4 cores
SoC : BROXTON-P A0
CRB : Apollo Lake LPDDR3 RVP1A
Software
Ubuntu 15.10 64 bits
BIOS (IFWI Version): 131.10
KSC: 1.12
Kernel drm-intel-nightly 4.6.0-rc3 dc5380b from
<a href="http://cgit.freedesktop.org/drm-intel/">http://cgit.freedesktop.org/drm-intel/</a>
commit dc5380b5263ebb0bf251bb09db542585702b528b
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Mon Apr 11 20:43:45 2016 +0100
drm-intel-nightly: 2016y-04m-11d-19h-43m-10s UTC integration manifest
libdrm-2.4.67-11 ea78c17 from git://anongit.freedesktop.org/mesa/drm
cairo 1.15.2 db8a7f1 from git://anongit.freedesktop.org/cairo
DMC 1.06 from <a href="https://01.org/linuxgraphics/downloads/broxton-dmc-1.06">https://01.org/linuxgraphics/downloads/broxton-dmc-1.06</a>
intel-gpu-tools-1.14 c89e8db from
<a href="http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git">http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git</a></pre>
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