[Bug 67517] New: [HSW mobile S3 Regression] Resume from S3, dmesg with "[drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 41000"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67517

          Priority: medium
            Bug ID: 67517
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW mobile S3 Regression] Resume from S3, dmesg with
                    "[drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write
                    to 41000"
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 83263
  --> https://bugs.freedesktop.org/attachment.cgi?id=83263&action=edit
dmesg: S3 resume with error

Environment:
---------------------
Kernel: (drm-intel-next-queued)fae5cbff3e3e4097de2e76178d462b90626c2bdb
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sun Jul 21 21:37:09 2013 +0200

    drm/i915: clean up crtc timings computation

HSW mobile msi product:
MSI Haswell Notebook MSI MS-16GC Notebook 15.6
Host bridge ID=0x0c04 (rev 06);
VGA ID=0x0416 (rev06)
CPU: i7-4700MQ 2.4GHz; 
BIOS: E16GCIMS.509 (04/24/2013) 
EC: 16GCEMS1 ver5.00 (04/12/2013);
ME: 9.0.2.1345;

Description:
--------------------
Test S3 with latest -next-queued kernel, there's drm error in dmesg:
[   66.639759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 41000
[   66.639769] [drm:intel_uncore_check_errors] *ERROR* Unclaimed register
before interrupt

There's some ACPI and ALSA error,it's not our bug, and we have reported it in
Bug #66240.

I also test another HSW acer product, there's not this issue, but there's call
trace when resume from S3, you can see the status in Bug #64379.

Reproduce step:
--------------------
1. boot machine up
2. S3
3. check dmesg

Bisect result:
--------------------
bf51d5e2cda5d36d98e4b46ac7fca9461e512c41 is the first bad commit
commit bf51d5e2cda5d36d98e4b46ac7fca9461e512c41
Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
Date:   Wed Jul 3 17:12:13 2013 -0300

    drm/i915: switch disable_power_well default value to 1

    Now that the audio driver is using our power well API, everything
    should be working correctly, so let's give it a try.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20130730/e90e63a6/attachment.html>