I have recently bought a Toshiba Satellite C850 laptop. I've managed to install Ubuntu 12.10 on it and everything works fine (this site helped me installing the wireless driver). The problem is that the brightness of the screen is full, 100%, and I can't adjust it. The
F2 key should decrease the brightness but nothing happen when pressed (with or without
FN). I searched this site and tried out every answer relevant to the problem. I've tried the grub parameters, the ATI property driver and xbacklight (a friend told me xbacklight wont work in 3.4+ kernels). The result, all failed. I'm really stuck now. If you know a solution please help.
- Model: Toshiba C850
- GPU: AMD/ATI Radeon HD 7610m