[Bug 87666] New: [BSW] Only DP screen shows text when DP and HDMI screen are connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87666

            Bug ID: 87666
           Summary: [BSW] Only DP screen shows text when DP and HDMI
                    screen are 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 111260
  --> https://bugs.freedesktop.org/attachment.cgi?id=111260&action=edit
dmesg

==System Environment==
--------------------------
BIOS version 0.49
Regression: No. I tried -next-queued 2014_08_11 commit
fdd508a6419217cce28213f3c9bd27c02a0d4c71 and still saw this issue.

Non-working platforms: BSW

==kernel==
--------------------------
-nightly: 4fa23142a15526f4a4b5df61f26eacdd558a849a(fails)
-queued: 140fd38dc4962ae3694f81900b51c567df1b6d33(test fails in the same way)
-fixes: b0616c5306b342ceca07044dbc4f917d95c4f825(test fails, and none display
shows any text. Bug 87253 covers that issue)

==Bug detailed description==
-----------------------------
Boot BSW with DP and HDMI connected, when login appears on DP display, only DP
screen shows text. the eDP screen and HDMI screen does not show anything. 

During boot, eDP screen has some text showed, but finally eDP screen is black.

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

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