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sealdriver

macrumors newbie
Original poster
Hi
I've just got the M11 iMac 24" and decided to connect a second monitor that I had used with my previous iMac. It is an old Apple cinema screen and I connected it via an adapter and HDMI.
It works OK except that the windows are somewhat transparent. I opened Tweetbot on that monitor and I could see the desktop showing through the window, after a few minutes this transparency disappears and all looks normal until I scroll the window and then you can, once again, see the previous posts show. This again fades to normal after a few minutes.
Is this likely to be an incompatibility with the monitor or is there some setting I need to change?
I have no idea myself.
Many thanks
 
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