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[Bug 1040718] Backlight Control Lost with Install of NVidia Driver on 42.2, fix for 42.3?
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 25 May 2017 18:16:16 +0000
  • Message-id: <>

--- Comment #2 from Daniel Dadap <ddadap@xxxxxxxxxx> ---
`xrandr --brightness` works by adjusting the brightness of the image as you
say, but the Backlight property is supposed to actually adjust the backlight.

`xrandr --verbose` should advertise the availability of the backlight property
on your display, and list what the range of acceptable values is. Once you know
the name of the output CRTC associated with your panel, and the valid range,
you should be able to do e.g.:

xrandr --output LVDS-0 --set Backlight 10

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