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I have just installed Elementary OS 5.0 and surprised how good it is! There is one annoying thing which is the backlight not working. I have tried different solutions that seemed to have worked for others but not for me.

What I have tried:

  • install xbacklight
  • run sudo xmodmap -e 'add mod3 = Scroll_Lock'
  • run xset led 3
  • update grub file: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=video"

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