Comment 6 for bug 516354

Since the F1 and F2 brightness keys and the slider applet also require additional HAL support to work, can someone please confirm whether it works or not by running:

$ cat /sys/class/dmi/id/product_name
$ echo <value between 0 and 1023> | sudo tee /sys/class/backlight/nvidia_backlight/brightness

That's because I got inconsistent reports so far.