iMac 27 Late 2013 screen problems after updating to Catalina
I have an iMac 27 Late 2013. After updating to Catalina the display goes crazy (artifacts, color blocks, etc.). My 1st thought was the GPU had failed but it works fine in safe mode.
Is my GPU pooched or is this some kind of graphics incompatibility with Catalina? It has an Nvidia Geforce GT 755M.
MacOS is fully up to date
Thanks for your time!
Anthony
iMac 27″, macOS 10.15