[Bug 91709] New: [BYT] :After hotplug all display ,screen can't go back

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91709

            Bug ID: 91709
           Summary: [BYT] :After hotplug all display ,screen can't go back
           Product: DRI
           Version: DRI git
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yi.guo at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

System Environment:

BIOS: BBAYCRB1.X64.0090.R10.1404072340
Kernel:4.2.0-rc7_drm-intel-nightly
Tree: git://anongit.freedesktop.org/drm-intel
Branch:drm-intel-nightly
Commit:  bf0f6061f310962d6127a1a343e9981f8d5a5c0c

Bug detailed description

when unplug HDMI an DP, eld information is correct; then replug all display,
all screen are black. but only hotplug one display, screen can go back.

***And I have catch dmesg in above 3 circumstance, find they all blank. 

Reproduce Steps

1.unplug all display 
2.replug all display

Expected Result

all screen can go back

Actual Result

all screen are black

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list 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/20150821/81c44cd5/attachment.html>