[Bug 87220] New: [BDW-H]VGA port unable to work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87220

            Bug ID: 87220
           Summary: [BDW-H]VGA port unable to work
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jinxianx.guo at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 110715
  --> https://bugs.freedesktop.org/attachment.cgi?id=110715&action=edit
snapshot

==System Environment==
--------------------------
Regression: No
It's first time to test on BDW-H

Non-working platforms: BDW-H

==kernel==
--------------------------
origin/drm-intel-nightly: 2014_12_11(fails)
origin/drm-intel-next-queued: 5cb7179b428cf00dd96e74ed4f37efb19ba05e14(fails)
    drm/i915: Forcewake Register Range changes for CHV
origin/drm-intel-fixes: b0616c5306b342ceca07044dbc4f917d95c4f825(fails)
    drm/i915: Unlock panel even when LVDS is disabled

==Bug detailed description==
-----------------------------
VGA port unable to work. If boot system with VGA monitor, the system stopped at
"Starting new kernel"(please refer to snapshot in attachment.); If boot system
with DP monitor then plug in VGA, VGA monitor unable to detected.


Reproduce steps:
-------------------------
1. Boot the system with VGA monitor

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