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Same problem with laptop
Authored by: asb1002 on Jan 30, '02 09:12:33AM

I had the same problem with this on my G4 Laptop after an upgrade to 10.1.? I found the only way I could see the screen was to plug in an external monitor, which used different brightness settings.

I found this problem is cured by a setting in Open Firmware, which can be reset by holding down Cmd+Alt+O+F when booting. After a number of chimes, the screen comes back with its settings inteact. (I think the number of chimes indicates what level of reset occurs, but I don't know the difference; I usually go with 3.)

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