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I'm connecting my macbook air to a late 2013 21.5inch iMac in target display mode, using the iMac as a display. The iMac works fine as a display, but when I try to turn target display mode off (command-F2, or unplugging the cable), the iMac screen goes black or fuzzy, and I can't use the iMac unless I restart it.
Any advice?
iMac 21.5", macOS 10.13
Reset the NVRAM on both Macs per the directions in How to reset NVRAM on your Mac
Reset the NVRAM on both Macs per the directions in How to reset NVRAM on your Mac
Problems turning of Target Display Mode on iMac
