Perculiar Display Issue


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Basically after installing Mountain Lion, the screen brightness is roughly half what it should be. Normally around 50% brightness is fine, but in ML I have to have it at 100%. Can I fix this? I've tried changing various calibration settings, none of which have helped.

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Something similar happened to me out of nowhere too. When I turned on my iMac the other day brightness was extremely low and there was this yellow tint across the entire screen. Display preferences were the same as always, nothing changed there. When I restarted the issue was gone.

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I reset the PRAM and it seemed to fix it, so looks like Neo had the answer on this one.

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