[Bug 72897] New: [BYT] DP(Port C) can't light up after loading i915 driver.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72897

          Priority: medium
            Bug ID: 72897
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: tprevite at gmail.com
           Summary: [BYT] DP(Port C) can't light up after loading i915
                    driver.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: guang.a.yang at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 91019
  --> https://bugs.freedesktop.org/attachment.cgi?id=91019&action=edit
dmesgwithDP.log

System Environment:
--------------------------
Platform: BYT-M
kernel:   (drm-intel-nightly)f0404eaa3ab8607058a3581e0d691d35ca4b79bd

Bug detailed description:
---------------------------
DP(Port C) can light up at GRUB step, but black screen after loading I915
driver. With testdisplay -i, it shows DP connected. 

This issue have already tracked at
JIRA(https://jira01.devtools.intel.com/browse/VIZ-3323), now moved to FDO.

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