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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>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW Regression]igt/kms_flip causes "WARNING: CPU: 5 PID: 4368 at drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()" sporadically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80122">80122</a>
</td>
</tr>
<tr>
<th>Keywords</th>
<td>bisect_pending
</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 Regression]igt/kms_flip causes "WARNING: CPU: 5 PID: 4368 at drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()" sporadically
</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>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@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=101210" name="attach_101210" title="dmesg">attachment 101210</a> <a href="attachment.cgi?id=101210&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
This bug only find on -nightly branch.
Non-working platforms: HSW
==kernel==
--------------------------
origin/drm-intel-nightly: e9ce9f961282205b5954a0da4e48e96884190a77(fails)
drm-intel-nightly: 2014y-06m-16d-21h-22m-19s integration manifest
origin/drm-intel-next-queued: 8c0f92e1f87149bd2429015c9d0600a13a34d607(tried 5
times, didn't find this issue)
drm/i915: Fix comment about our plane remapping on gen2/3
origin/drm-intel-fixes: 223a6f2b975ab35d93270ea1d4fb6e0ac6b27fe6(tried 5 times,
didn't find this issue)
drm/i915/bdw: remove erroneous chv specific workarounds from bdw code
==Bug detailed description==
-----------------------------
igt/kms_flip causes "WARNING: CPU: 5 PID: 4368 at
drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()"
Case list:
igt/kms_flip/vblank-vs-dpms-suspend
igt/kms_flip/vblank-vs-dpms-suspend-interruptible
igt/kms_flip/vblank-vs-modeset-suspend
igt/kms_flip/vblank-vs-modeset-suspend-interruptible
igt/kms_flip/vblank-vs-suspend
igt/kms_flip/vblank-vs-suspend-interruptible
Output:
[root@x-hsw26 tests]# ./kms_flip --run-subtest vblank-vs-dpms-suspend
IGT-Version: 1.7-gd123de6 (x86_64) (Linux:
3.15.0-rc8_drm-intel-nightly_e9ce9f_20140617+ x86_64)
Using monotonic timestamps
Beginning vblank-vs-dpms-suspend on crtc 6, connector 25
1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 0x5 0x48 148500
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:28:21 2014
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:28:54 2014
vblank-vs-dpms-suspend on crtc 6, connector 25: PASSED
Beginning vblank-vs-dpms-suspend on crtc 10, connector 25
1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 0x5 0x48 148500
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:29:27 2014
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:30:00 2014
vblank-vs-dpms-suspend on crtc 10, connector 25: PASSED
Beginning vblank-vs-dpms-suspend on crtc 14, connector 25
1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 0x5 0x48 148500
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:30:33 2014
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jun 17 21:31:06 2014
vblank-vs-dpms-suspend on crtc 14, connector 25: PASSED
Subtest vblank-vs-dpms-suspend: SUCCESS
==Reproduce steps==
----------------------------
1. ./kms_flip --run-subtest vblank-vs-dpms-suspend</pre>
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