- Sony SVE171A11M
- Intel Core i3
- AMD Radeon HD 7500M/7600M Series
- 1600x900 screen
- I start the system, I set the screen brightness to 100%. When I restart, the brightness is at 50% again.
- When I plug a second screen, if I change the brightness with the "Brightness and Lock" tool,or with the keyboard shortcuts, both screens are black for a few second, and sometimes the external screen "restart".
I would like to find a way to force the brightness staying at 100% at any time, even when restarting.