[Bug 105046] Screen resolution reset to 1368x768 when turning monitor off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105046

            Bug ID: 105046
           Summary: Screen resolution reset to 1368x768 when turning
                    monitor off
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: forums18 at mizapf.de

With amdgpu.dc=1, when I turn off the monitor or the monitor enters power-save
state, the screen resolution changes to 1368x768, which messes up the desktop
elements arrangement. Opening the settings, it is the highest offered
resolution, and the original resolution can only be restored by killing X or
rebooting.

This effectively means that I have to keep my monitor running till logout.

It happens on three different systems, all using amdgpu (RX480, RX580, RX460).

Does not happen with amdgpu.dc=0.

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