[Bug 85048] New: [BDW-Y] DP display unable to light up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85048

            Bug ID: 85048
           Summary: [BDW-Y] DP display unable to  light up
           Product: DRI
           Version: XOrg CVS
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: xunx.fang at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

==System Environment==
--------------------------
Regression: No. 

Non-working platforms: BDW-Y

==kernel==
--------------------------
origin/drm-intel-nightly: 2ea23cd593ba60ead60e2f796fae675aa4475b1a(fails)
    drm-intel-nightly: 2014y-10m-13d-09h-34m-29s UTC integration manifest
origin/drm-intel-next-queued: fff95501f2095fa8a9dbd7e177bbf642d241b2fe(fails)
    drm/i915: intel_backlight scale() math WA
origin/drm-intel-fixes: 1180e20606fd7c5d76dc5b2a1594fa51ba5a0f31(fails)
    drm/i915: properly reenable gen8 pipe IRQs

==Bug detailed description==
-----------------------------
Booting with DP, DP monitor unable to be light up. HDMI works good.

==Reproduce steps==
---------------------------- 
Boot with DP

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