Big Sur, UltraStudio HD Mini and Resolve

Hi,

I've a fresh install of MacOS 'Big Sur' on a 27" iMac 2017 with Resolve 17.1b1 and a UltraStudio HD mini.
This setup doesn't work, and after start up I can see that Resolve is addressing the USHDmini unit because it switching video standard or trying to.
Resolve responses with two error pop-ups;
- Failed to enable video output mode [0x48703235] at device 0
- Followed by; Failed to set videomode on the video I/O device

It seems to be something wrong with the Desktop Video software/driver (v11.7) because its own Media Express package can only play video for about 2 secs before it freezes up.

All freshly installed after manual removal of previous versions.

Please help!

I experience the same issue on a (15inch) 2016 Mac Book Pro.
Help appreciated.

Hi,

This is due to a mis-installed or not properly updated Desktop Video 11.7 driver after a Big Sur update.
Check this thread; https: Mac mini M1 - Big Sur - Issues
Try to uninstall the Desktop Video Vxx.x software first then re-install Desktop Video 11.7 and follow the instructions to the letter.
Good luck.