https://bugzilla.kernel.org/show_bug.cgi?id=106591

--- Comment #8 from Aaron Lu <[email protected]> ---
(In reply to Bartosz from comment #7)
> https://bugzilla.kernel.org/show_bug.cgi?id=106591
> 
> bartosz@OpenSuse:/sys/class/backlight> pwd
> /sys/class/backlight
> bartosz@OpenSuse:/sys/class/backlight> ls
> radeon_bl0  toshiba

Does manually change backlight work there?
e.g. to manually change backlight using the radeon_bl0 interface, you can:
# cd radeon_bl0
# cat max_brightness
XXX
# echo a_value_smaller_than_XXX > brightness
see if backlight changes.

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