Brightness controll on toshiba ultrabook

Hi, The brightness on my toshiba u920t is stuck on full brightness when using opensuse, the “Fn” buttons dont change the brightness and neither does the slider in the brightness settings, I came across this website from a link on toshiba’s own website:

Linux Information for Toshiba PC

the top two downloads look like they may solve the problem, but I’m new to linux and I don’t know how I would go about implementing the solutions or if they will even work.

can someone help me please?