[Bug 73687] New: [IVB DP Dongle] Apple miniDP-to-DP dongle hotplug fail after start X

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Jan 15 23:53:30 PST 2014


https://bugs.freedesktop.org/show_bug.cgi?id=73687

          Priority: medium
            Bug ID: 73687
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB DP Dongle] Apple miniDP-to-DP dongle hotplug fail
                    after start X
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: qingshuai.tian at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 92207
  --> https://bugs.freedesktop.org/attachment.cgi?id=92207&action=edit
dmesg of DP dongle plugged in after X starting

Environment:
-------------------
  Kernel: (drm-intel-next-queued) f1fcde49872f390a4060fa9ee8b02d3f2a8508b7
  Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843, 
  BIOS MBP102.88Z.0106.B03.1211161133 11/16/2012

Description:
--------------------
When I plugged the miniDP-to-DP dongle in the machine after booting up and
starting X, the DP monitor was black, while xrandr command showed "DP2
connected (normal left inverted right x axis y axis)".

After I set command "xrandr --output DP2 --preferred" , the monitor can show
correctly. And the hotplug will also work well since then.

The miniDP-to-DP dongle hotplug works well without starting X.

Test Step:
--------------------
1.reboot machine
2.start X
3.plug in miniDP-to-DP

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