https://bugzilla.kernel.org/show_bug.cgi?id=208341
--- Comment #15 from eubn...@naver.com ---
plugged & on first boot
~ $ grep . /sys/class/backlight/*/*
/sys/class/backlight/amdgpu_bl0/actual_brightness:179
/sys/class/backlight/amdgpu_bl0/bl_power:0
https://bugzilla.kernel.org/show_bug.cgi?id=208341
--- Comment #14 from eubn...@naver.com ---
unplugged & on first boot
~ $ grep . /sys/class/backlight/*/*
/sys/class/backlight/amdgpu_bl0/actual_brightness:179
/sys/class/backlight/amdgpu_bl0/bl_power:0