[Bug 202445] New: amdgpu/dc: framerate dropping below adaptive sync range causes screen flickering

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=202445

            Bug ID: 202445
           Summary: amdgpu/dc: framerate dropping below adaptive sync
                    range causes screen flickering
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.0rc4
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: libcg at protonmail.com
        Regression: No

linux 5.0rc4
mesa 4aa64940c
xf86-video-amdgpu a1b479c

hardware:
- R9 Fury
- Samsung C27HG70 (1020.0 firmware, Freesync Ultimate Engine)

I'm running the Unigine Valley benchmark extremely smoothly as long as the
framerate stays in between 48-144fps. When it drops below that, I'm observing
heavy stuttering and flickering in the darker parts of the image. The
flickering also affects the loading screen when frames are rendered very
infrequently.

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