Ubuntu
xserver-xorg-video-nv package

cannot adjust laptop brightness

Asked by kiran

i am using lenovo g580 ubuntu 13.10
i cannot adjust the brighness of my laptop.
it worked in 12.04
i tried
GRUB_CMDLINE_LINUX_DEFAULT="acpi_osi=Linux"
and
GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor"

i installed xbacklight still it is not working

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Ubuntu xserver-xorg-video-nv Edit question
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kiran
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kiran (pskirann) said : 		#1

#problem solved
#Brightness
create the file /usr/share/X11/xorg.conf.d/20-intel.conf with the following content:

#Add the following
Section "Device"
        Identifier "card0"
        Driver "intel"
        Option "Backlight" "intel_backlight"
        BusID "PCI:0:2:0"

EndSection