[Bug 104531] New: Cannot turn monitor off over DP cable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104531

            Bug ID: 104531
           Summary: Cannot turn monitor off over DP cable
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: low
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: gringo at slonko.net
        QA Contact: xorg-team at lists.x.org

Created attachment 136602
  --> https://bugs.freedesktop.org/attachment.cgi?id=136602&action=edit
xorg log file (amdgpu over DP cable)

NOTE: This is very similar to Bug #38030.

"sleep 5; xset dpms force off" turns my monitor off, then turns it on again
when using DP cable although works just fine with HDMI cable (monitor
permanently turns off). I have this problem with both radeon and amdgpu
drivers.

card: MSI R9 270 GAMING 2G
xf86-video-amdgpu: latest git
xf86-video-ati: 7.10.0
xorg-server: 1.19.6
kernel: 4.14.11

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