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Poor Graphic Performance On Left Cinema Display of Pair
Greetings, experts. We have a Mac Pro with an nVidia GeForce 8800GT card driving two 20" Cinema Displays (originals, from the acrylic casing era, not aluminum). We recently had them refurbed through MoniServ. Ultimately the screens got replaced, one at a time as we switched from dual monitor to single monitor mode in the interim. From an image quality standpoint the displays look great. Problem I am now experiencing is that when dragging a window from the right (main screen with the menu) to the left, the performance is fluid on the right but becomes jerky and leaves ghosts as soon as the window crosses the boundary to the left. It appears as if the videocard is not adequately refreshing the left screen. I noticed in the System Profiler that in the Displays section it indicates my Main monitor Quartz Extreme is "Supported". For the second monitor it is "Not supported." I'm wondering if this is involved. Is there firmware in involved anywhere here? Granted the basic electronics of this display are the same and only the panel has changed, but we weren't having this issue prior to the repair. Anyone have an idea what's up? Thanks.
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