[Bug 76151] New: [HSW-M GT3e bisected]Blackscreen after booting with HDMI only

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76151

          Priority: medium
            Bug ID: 76151
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW-M GT3e bisected]Blackscreen after booting with
                    HDMI only
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 95768
  --> https://bugs.freedesktop.org/attachment.cgi?id=95768&action=edit
dmesg

system Environment:
--------------------------
platform: HSW-M GT3 
Kernel:    (drm-intel-next-queued) c2831a94b5e77a407db0708816949d4a87416a8e

Bug detailed description:
-------------------------
Boot the OS with HDMI only, blackscreen shows. The screen is able to be lighten
by testdisplay or X.

It's a regression bug, the first bad commit is
6d88064edcfc5e5893371f7c06b9f3078dc1edf6 

Reproduce steps:
--------------------
boot the OS with HDMI only

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