Yes it does
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https://bugs.launchpad.net/bugs/1851833
Title:
[Sager Clevo notebook model PB50_70RF,RD,RC] Unable to adjust
brightness of backlight
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Public bug reported:
I am unable to adjust the brightness of the backlight of my laptop
screen either by using the slider of by changing the value in
/sys/class/backlight/intel_backlight/brightness directly.
I have tried changing my GRUB configuration:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash
