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After period of inactivity screen went dim, and eventually got black, it couldn't get to previous state. When mouse is moved screen from black came to minimum brightness state. Combination of Fn and brightness button fixed this, but on very strange way. Every time I pressed button to increase brightness it came more bright but with next push of button went to minimal brightness. So, every second push of button puts screen to minimum. Gremlins?

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Which BIOS Version do you have? Did you already try to update BIOS to the latest version and set the screen brightness in BIOS to maximum (both on battery power and on power supply mode)? – MrMuretto Apr 25 '12 at 23:37
This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro May 14 '12 at 5:39

closed as off topic by fossfreedom♦ May 14 '12 at 9:20

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protected by Community♦ Nov 16 '11 at 14:59

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