macOS Catalina causing problems with external GPUsImage via Blackmagic
Catalina teething problems continue
What you need to know
macOS Catalina seems to be causing issues with eGPU setups.
AppleInsider has reported failures to boot and freezing when using some units
Most common problems affecting Mac mini and Radeon 570 and 580 eGPUs.
It appears that macOS Catalina is causing problems for users with external GPU setups. According to reports, certain combinations of Mac and eGPUs are experiencing issues including failure to boot up and freezing. As reported by AppleInsider:
Typical problems reported by many users include an inability to boot up the Mac with a display connected to the eGPU. If the Mac will start with the monitor attached, it immediately restarts. Others report their Macs freezing.
Our own direct testing can confirm that the problems are happening on a Sonnet eGPU with the Sapphire 570 card that was in Apple's own developer's kit from two years ago.
Through both our own testing and the reports of users...
Source:
macOS Catalina causing problems with external GPUs
