I have a Thinkpad x120e; upgraded to Windows 8 last week and have tried EVERYTHING to get rid of this craptastic adaptive brightness.
The screen gets brighter on a white backdrop and slowly dims on darker images. I feel like I'm tripping when I'm reading articles online.
Yes, I've turned adaptive brightness off (battery and AC options). Yes, I've tried every power plan. Yes, I created my own power plan, through the Lenovo "power manager" and through Window's "control panel." Yes, I've optimized the display, I've updated the driver for the monitor. I've done everything. Even spent an hour chatting with Microsoft support (who basically said nothing is wrong and restart my laptop). I swear this thing is going out the window if I have to deal with the damn labile brightness.
Please help me. Please, please, please and thank you,