Topic: Public Preview: Mac USB driver for macOS 11 & Apple Silicon hardware
USB 3 / 2.0 Driver for macOS 11 Big Sur, Intel / ARM (Apple Silicon)
Notes on public beta driver version 3.23
!! This driver will not work on macOS versions below 11 !!
It supports both Intel and M1 (ARM based) computers
While the whole driver is a universal binary to support Intel and ARM natively, at this time the included TotalMix FX 1.70 B5 is Intel only. Thanks to Apple’s Rosetta 2 emulator, Intel software can run on ARM-based hardware really well. We did not notice any showstopper or missing feature with it. The same is true for the current DigiCheck NG v 0.85, which can be downloaded here:
It runs nicely on the new Apple Silicon hardware thanks to Rosetta 2. RME will provide universal binaries of these two apps later.
With Apple Silicon even native third party extensions can no longer be installed directly. One needs to allow these in a one time process by entering Recovery mode. With Big Sur on Intel hardware: installation should be the same as under Catalina. Otherwise try Recovery mode and manual enabling.
Added: On Apple's developer ARM sample USB 2 audio operation shows issues when the option Short Safety Offset is activated. As the ARM machine operates very reliable even at very low sample buffer sizes this is not seen as limitation, and is under further investigation.
Driver download link:
Update on M1 operation, 2020/11/24
We now received an M1 computer with Thunderbolt port. These are our first observations:
- USB driver: driverless (CC) MIDI did not work. This issue vanished after updating the machine to macOS 11.0.1.
- After that update we had to 'allow' the RME driver once again. Conclusion: USB driver version 3.23 seems to work with no obvious issues under 11.0.1.
- Thunderbolt: The Thunderbolt driver for the UFX+ can be installed, Settings dialog works, but audio I/O is not working. We are investigating this issue.
More to come.