I use Xubuntu Linux
Brightness is good without using suspend mode but after using suspend mode I got problem with brightness It's lower than before ! I need your help
Some Ubuntu laptops screen brightness reset to the lowest or highest on every boot and you have to configure the screen birghtness on every login.
To save the screen brightness settings in Ubuntu laptop.
Open a terminal window, and execute this command to edit /etc/rc.local:
Add this before the last line “exit 0″:
number 5 is the value of your screen brightness. With this command check the maximum:
Try modifying your /etc/default/grub file.
Edit the line: