[Bug 73951] New: [Bay Trail-I HPD] Hot plug detection doesn't work with Display Port

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73951

          Priority: medium
            Bug ID: 73951
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [Bay Trail-I HPD] Hot plug detection doesn't work with
                    Display Port
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: kenta.ueda at intel.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Display Port Hotplug detection doesn't work on BYT-I with Linux.

Here are my tested environment.
System environment:
-- chipset: BayTrail-I
-- system architecture: x86_64
-- xf86-video-intel/xserver/mesa/libdrm version: 2.4.46
-- kernel version: 3.11.9
-- Linux distribution: Ubuntu 13.10
-- Display connector: Display Port

Reproduce steps. Probability if not 100% reproducible.
    1. Boot OS and X window system
    2. Connect DisplayPort Monitor, but the monitor is not recognized.

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