[Bug 221827] New: Backlight regression with 7.1.6

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221827

            Bug ID: 221827
           Summary: Backlight regression with 7.1.6
           Product: Drivers
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: rjgolo@gmail.com
        Regression: No

Upon upgrading to 7.1.6, backlight at 100% is set to dimmest level.

cat /sys/class/backlight/amdgpu_bl2/*brightness

actual_brightness
brightness
max_brightness

100% or setting brightness same to max or less 1 than max - 7.1.6
0
65535
65535

98% - 7.1.6 - brightness restored
65290
64224
65535

100% - reverted 1191285ecb4233e5bf907da7e9394d7999055566 - ok
63576
62451
62451

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