I can't change the screen brightness on my Fujitsu Amilo li3710. Pressing the keys (Fn+Brightness up) or sliding the bar in Brightness&Lock has no effect. It worked on windows so the function is supported by the hardware. Thanks for your help.
sudo apt-get update && sudo apt-get upgrade
sudo gedit /etc/default/grub
GRUB_CMDLINE_LINUX="quiet splash acpi_backlight=vendor"
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3 years ago