UAD2 card problematic in Big Sur

[zipb]

I am testing an upgraded clone on a TB3 external SSD (to Big Sur latest) of my Mojave disk. I have a problem with my Universal Audio UAD2 Quad card. It isn't recognized properly. If I start from 0 with the install, it may work once, but after a restart i get Device Not Found.

Also, booting is really slow. Minutes. And waking from sleep restarts the hack, with an error pointing to the Univeral Audio software.

Univeral says external boot disk are untested/might not work.

Anyone else experiencing this? Solutions?

The same card works great in Mojave(on internal boot disk)

 

[zipb]

If I set csr-active-config (or disable SIP in OC when booting) to 03000000, the UAD card works fine, and booting is quick.

Will investigate further.

Sleep now works, no reboot on wake.

 

[Edhawk]

The SIP entry <03000000> in OpenCore does the following:

• <03000000> - Disable kext signing (0x1) and filesystem protections (0x2).

So you probably have a kext that needs the signing feature to be disabled.

Way to test this would be to enter <01000000> in place of <03000000> in your config.plist. This would set SIP to only Disable Kext Signing.

Then see if the UAD still works, and if the system boots without issue.

Just keep a copy of your current OC EFI folder on a spare USB drive, so you can easily boot back in to macOS if the kext signing and filesystem protections both need to be disabled.