Since i finished a major project in my OSX partition recently I was spending more time in the LM13 MATE 64bit partition recently, but noticed that the screen is noticeably dimmer, and pushing the F2 screen brightness button doesn't change anything. Saturday pushing the F2 button at least showed a brightness image with a progress bar that would increase the brightness, but then it would go right back down. I did an update/upgrade on Sunday and spent some time with some post upgrade issues that were solved by a restart, e.g., Firefox would not quit, and the LM splash window with all of the forums and chat stuff also would not close or even drag out of the way. That was fixed. But this AM, screen dimness would not brighten . . . I checked the power management and it shows screen brightness bar maxed in AC power page . . . but "dim screen when idle" is checked in Battery power page. I'm in AC power, but screen is dim, view-able, but doesn't respond to keyboard buttons to increase brightness. I like a bright screen . . . any thoughts? Is this a known issue? This is MBPro 2.53 GHz Core 2 Duo with 4 GB Ram.
MacBookPro5,4 2.53Ghz Core 2 Duo 4GB Ram LM13 MATE 64-bit w/Floating Feet!!!