Hittade detta på:
http://community.sony.com/t5/VAIO-So...ing/td-p/55487
Citat:
When ambient light is detected, Automatic Brightness Settings feature will automatically adjust LCD brightness level. If desired, the feature can be turned off to keep brightness at a constant level regardless of ambient light.
Follow this procedure to turn off the Automatic Brightness Settings feature:
Press Windows + W to open charms.
In Search screen, click Settings category.
In the Search field, type VAIO Control Center, and press Enter key.
In VAIO Control Center, on left side of screen, click Image Quality.
Under Display Brightness, click button to change the setting from On to Off.
To re-enable Automatic Brightness Settings feature, click to change button setting back to On.
In the VAIO Control Center window, click the X in the upper-right corner to close window.
