I'm still having the above issue. The solution posted above used to work for me, although I couldn't leave the monitor plugged in and unattended, becasue when it went to sleep it crashed both monitor and imac upon sleeping. then I'd need to reboot. But now in 2024, it's dead as a dodo. I cannot afford to upgrade my imac, and shouldn't have to as its working fine as a standalone computer. Does anyone have a new solution?
YvonneVL
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