Brightness should be controlled by pressing Fn + F5 and Fn + F6. Nothing happens when I press these keys. My computer is a Asus X551MAV-SX366GB and I'm using Lubuntu 14.04
1 Answer
Here is the summary of what I did:
I created the file
/usr/share/X11/xorg.conf.d/20-intel.conf
as described here 13.10 Can't Adjust Dell Laptop Backlight:Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection
Then I changed one line in
/etc/default/grub so it looked like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=" and ran
sudo update-grub` from the command line.Install xbacklight if not already installed
sudo apt-get install xbacklight
. Then I putxbacklight -set 50
to autostart applications.Reboot
This worked for me.
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Hmmmm. Not working with Xubuntu on the same machine :-( I see the indicator, when I press function keys, but nothing happens.– CarstenDec 23, 2014 at 8:17
xbacklight
).