Comment 30 for bug 1249219

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Jeremie Tamburini (jeremie2) wrote : Re: backlight control acpi_video0 instead intel_backlight

On my Fujitsu Lifebook A512 I should be able to adjust the brightness pressing Fn+F6 or Fn+F7. The brightness-indicator pop-up works but the brightness doesn't change. This should be related to the cpi_video0 / intel_backlight issue.

I found a workaround here

Basically it works creating the /usr/share/X11/xorg.conf.d/20-intel.conf file with the following lines:

Section "Device"
        Identifier "card0"
        Driver "intel"
        Option "Backlight" "intel_backlight"
        BusID "PCI:0:2:0"

This makes the brightness shortcuts Fn+F6 and Fn+F7 work.