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amdgpu_bl1: brightness and actual_brightness values out of sync, causing incorrect backlight percentage reporting #5132

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@georgestafilidis

On my AMD laptop running Arch Linux with Hyprland/Wayland, the backlight percentage reported by Waybar (and other tools) does not match the actual screen brightness. The issue appears to be that brightness and actual_brightness in /sys/class/backlight/amdgpu_bl1/ report different values, causing percentage calculations to be incorrect.

Anything I can do to fix this issue?

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