I am new to Mint. I just installed Mint 9 and so far everything works besides the brightness control. I have FN+F7 and FN+ F8 buttons mapped on my laptop for decreasing and increasing brightness. Unfortunately I cannot increase or decrease the brightness. This is important for me as I this is my school laptop and carry it with me the whole day and with full brightness the battery life is too less (hardly 40 minutes).
Workaround: as of now I am using the following command to control the brightness in a crude way
"sudo setpci -s 00:02.0 f4.b=XXX"
where in XXX corresponds to a hexadecimal value ranging from 00 to FF where 00 is no brightness and FF is full brightness.
I would appreciate if this bug is fixed as that would help me keep using my laptop a little longer without needing a charge.