[Bug 214801] New: polaris11 (rx560) regression

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=214801

            Bug ID: 214801
           Summary: polaris11 (rx560) regression
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.14.14
          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: roxmail at list.ru
        Regression: No

Created attachment 299307
  --> https://bugzilla.kernel.org/attachment.cgi?id=299307&action=edit
dmesg

After a long using 4.19.122, i am trying to move for a newer kernel (my xhci
greatly improved since), currently it is 5.14.14 and there are noticeable
slowdown. For a numbers the Unigine Heaven Benchmark 4.0 (linux OpenGL) was
used.

4.19.122:
 FPS: 43.9
 Score: 1105
 Min FPS: 15.2
 Max FPS: 90.7

5.14.14:
 FPS: 31.4
 Score: 790
 Min FPS: 22.4
 Max FPS: 60.1

And there are flickering artifacts visible while benchmarking with newer
kernel.

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