ubuntu-x-swat team mailing list archive

[Paul Abrahams <abrahams@xxxxxxx>]

What is the best way to install the EnableBrightnessControl fix if
xorg.conf doesn't exist (a common situation now)?  I  tried creating
xorg.conf as

Section "Device"
        Identifier      "Configured Video Device"
        Driver          "fbdev"
        Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

with material copied from xorg.conf.failsafe but that didn't have any
effect.

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https://bugs.launchpad.net/bugs/540112

Title:
  Can not change LCD brightness on Lenovo Y450 laptop