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screen-brightness-not-working, solved on Ubuntu 15.10

Ubuntu 16.xx
execute sudo gedit /etc/default/grub Change this line

GRUB_CMLINE_LINUX_DEFAULT="quiet splash" to something like below

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor" 

Execute sudo update-grub and reboot . See if brightness keys are working.


if want, let is go

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