[Bug 90396] New: [BSW] 3 monitors are all black screen after xinit + S3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90396

            Bug ID: 90396
           Summary: [BSW] 3 monitors are all black screen after xinit + S3
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          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 115680
  --> https://bugs.freedesktop.org/attachment.cgi?id=115680&action=edit
dmesg log

==System Environment==
--------------------------
HDMI monitor: Samsung LS24C570
DP monitor: Dell U2311Hb
BIOS: V59 
Regression: Yes, don't see this issue on drm-intel-testing-2015-04-23
Non-working platforms: BSW

==kernel==
--------------------------
-testing: drm-intel-testing-2015-05-08 (fails)

==Bug detailed description==
-----------------------------
3 monitors are all black screen after xinit + S3. 
3 monitors show text console if running "pkill X"


==Reproduce steps==
---------------------------- 
1. Reboot with 3 monitors connected
2. xinit &
3. echo mem > /sys/power/state
4. Resume by clicking the keyboard

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