[Powerdevil] [Bug 433019] Changing brightness has no effect on actual screen brightness

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=433019

--- Comment #9 from jmeron1...@gmail.com ---
I found a solution by editing /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to 

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"

and updating grub

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