I have the same problem
toshiba satellite C50-B-16T Mint MATE 64bit (Rebecca 17.1) (and also with 32bit)
no restult with xbacklight /sys/class/backlight/ is empty
volume keys (up,down,mute) do work fine (in my case they share F9, F10, F11)
How can I contribute to help fixing this problem?
I have the same problem
toshiba satellite C50-B-16T
Mint MATE 64bit (Rebecca 17.1) (and also with 32bit)
no restult with xbacklight backlight/ is empty
/sys/class/
volume keys (up,down,mute) do work fine (in my case they share F9, F10, F11)
How can I contribute to help fixing this problem?