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
Sounds like a GPU, however please do the following and see if possibly it is something else.
Please navigate to www.Etrecheck.com and download the free version of EtreCheck. Once you have you downloaded the app and installed it, please run the report and save it. This report will help us get a good idea what has been installed on your system and help us be able to diagnose what may be wrong.
When you have your report, you can attach it when you reply to this message and we can then review it and help you determine what is needed to get your system running well again.
For instructions on how to download your EtreCheck report and attach it to your reply to this message please click https://discussions.apple.com/docs/DOC-250000211
Sounds like a GPU, however please do the following and see if possibly it is something else.
Please navigate to www.Etrecheck.com and download the free version of EtreCheck. Once you have you downloaded the app and installed it, please run the report and save it. This report will help us get a good idea what has been installed on your system and help us be able to diagnose what may be wrong.
When you have your report, you can attach it when you reply to this message and we can then review it and help you determine what is needed to get your system running well again.
For instructions on how to download your EtreCheck report and attach it to your reply to this message please click https://discussions.apple.com/docs/DOC-250000211
iMac 27 Late 2013 screen problems after updating to Catalina
