[SOLVED] Brightness Control on Acer Laptop

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http://ubuntuforums.org – Hi I have just installed xubuntu on my laptop and I am unable to adjust the brightness of the screen....at the moment it is very bright!!! The laptop is an Acer 5755G core i7 nvidia gt540m The function keys (FN+arrows) bring up the image of the sun and the slider moves, but the screen brightness doesn't actually change. Other function key shortcuts, for volume, wireless, touchpad etc work fine. I have done some research on this forum and elsewhere, and I have a solution of sorts: Quote: echo 65 | sudo tee /sys/class/backlight/intel_backlight/brightness (Hardware)