[Bug 89600] New: [BSW] GPU hangs after S3 + S4

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89600

            Bug ID: 89600
           Summary: [BSW] GPU hangs after S3 + S4
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jeff.zheng at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 114360
  --> https://bugs.freedesktop.org/attachment.cgi?id=114360&action=edit
dmesg log

==System Environment==
--------------------------
Only eDP without external monitor.
BIOS: V59 
Regression: Not sure. Hard to test previous version because of bug 89005

Non-working platforms: BSW

==kernel==
--------------------------
-testing: drm-intel-testing-2015-03-13 (fails)

==Bug detailed description==
-----------------------------
I tried S3 and then S4, and dmesg showed GPU hang

==Reproduce steps==
---------------------------- 
1. Boot
2. echo mem > /sys/power/state and resume
3. echo disk> /sys/power/state and resume
4. dmesg shows:
[  289.878592] [drm] stuck on render ring
[  289.899951] [drm] GPU HANG: ecode 8:0:0xfffffffe, reason: Ring hung, action:
reset
[  289.899959] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  289.899962] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  289.899965] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  289.899968] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  289.899972] [drm] GPU crash dump saved to /sys/class/drm/card0/error

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