[Bug 87671] New: [BSW Regression] eDP screen is blank when HDMI monitor is connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87671

            Bug ID: 87671
           Summary: [BSW Regression] eDP screen is blank when HDMI monitor
                    is connected
           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 111262
  --> https://bugs.freedesktop.org/attachment.cgi?id=111262&action=edit
dmesg

==System Environment==
--------------------------
BIOS version 0.49
Regression: Yes. I tried -next-queued 2014_12_05 commit
8f4d2683b02ad8059bf1861acef64c022b9d5ce6 and both eDP and HDMI screens show
text.

Non-working platforms: BSW

==kernel==
--------------------------
-queued: 2014_12_24 commit 140fd38dc4962ae3694f81900b51c567df1b6d33(test fails)


==Bug detailed description==
-----------------------------
eDP screen is blank when HDMI monitor is connected.
Boot BSW with HDMI monitor (HP 2309P)connected, when login appears on HDMI
screen, the eDP screen does not show anything. 

==Reproduce steps==
---------------------------- 
1. Connect HDMI monitor to BSW and boot BSW
2. When login appears on HDMI screen, the eDP screen does not show anything
3. Running xinit shows xterm on HDMI display, but eDP screen still does not
show anything.

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