Blackmagic Forum

but unfortunately still doesn't work on Big Sur 11.1
macos recognize the device but desktop video doesn't.
dear Blackmagic guys, please help us.

you must allow to install and load the driver in the security settings
in system preferences while installing!



and here the info which interface will work with big sur:

https://www.blackmagicdesign.com/suppor ... 04071f1643



.

thank you Mark.
but there is no request for the driver installation on my security settings page.



but I can see the driver kext files in right place.
please look screenshot.

yes, it is installed, but the system security dismiss loading

deinstall the driver by the deinstaller.app inside the videodesktop folder

reinstall the desktop video 12.0 driver while the security window is open!

I've tried all kinds of things and as you said a permission does not appear in system settings. I've restarted macOS a million times but it doesn't work in any way.

And here's where I got it: I hated blackmagic devices.

i decided to remove blackmagic from my life and buy aja u-tap. No-hassle device without driver.

What good is a company that does not perform full and comprehensive testing with all operating systems?

then your system is corrupt

I solved the problem radically.