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Trygve · Oct 2, 2009, 12:18 AM

MacBook Pro 2.6 (pre-unibody), Apple 30" Cinema.

Since upgrading to 10.6, I am getting odd colored flicker, lines, pixels etc in large area of black on my 30" Cinema. Booting from a 10.5 fixes it. I have 10.6.1.

Anyone else seeing this?

GeForce 8600M GT

jmiddel · Oct 3, 2009, 02:56 PM

Does the flicker also appear on the screen of the MBP?, I don't know whether you have a 2 monitor set up, if you do, you try going to Displays and select the mirror mode just to make sure.

Trygve · Oct 5, 2009, 03:05 AM

Yes. Tow displays. built in 17" 1920x1200 and external 30" cinema 2560x1600. Flickers on the 30", not on the 17".

Under 10.5 there is no flicker but sometimes I get weird blue and green pixels that follow the contours of images on the 30" screen. This happens with two different 17" Macs. I am starting to think it is my 30" display and am taking the 17" to the Apple Store to see it hooked to their 30".