Problems with Coherence and Display resolution on iMac Retina 5K

Discussion in 'Windows Virtual Machine' started by Doug Kolb, Nov 8, 2014.

  1. Doug Kolb

    Doug Kolb Bit poster

    Messages:
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    Since I got the new iMac 27 Retina 5K, Parallels/Windows 8.1 seems to lose track of the display resolution, especially after suspending Windows and/or quitting Parallels. This is generally followed by improper screen drawing and/or black screens and/or very slow performance. I generally have to shut down windows and restart without coherence to get it going again. It seems to work OK when I leave Coherence off and use Windows in a window. I may have had this problem before I changed machines, but I am really unsure of my memory on that since I replaced the old iMac within a few days of installing Parallels 10 and Yosemite.

    Ideas and fixes would be welcome...
     

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