1

Topic: macOS DriverKit driver 4.20 (and up) now available

USB series DriverKit driver V 4.20 tries to help users who suffer from clicks and dropouts with our flagship interfaces Fireface UFX III and MADIface XT II, in multiple ways:

- Various small optimizations
We have worked hard and changed/improved many smaller details in the way the driver works, to make it even more compatible and robust.

- New option Safety Offset Large in Settings dialog
As explained in the included help of the Settings dialog (see below) in some setups a larger Safety Offset is required for click and dropout free operation. The new setting Large adds a 72 samples buffer.

- Detailed error counter in Settings dialog. These 5 new diagnostic counters add to the existing CRC32 one, and show errors in USB transfers, USB data, audio restarts caused by USB transfers, audio HAL, and when data is delayed. More details are explained in the accompanying help – yes, there is a help for the Settings dialog, as usual accessed from the Mac’s top menu.

- Supports Apple's Class Compliant audio driver with UFX III and MADIface XT II (new firmware required, see links below).
Using Class Compliant mode is the last resort to click and dropout issues. For several reasons the OS included CC audio driver might show less issues than a DriverKit driver – because it is a Kernel Extension one (but does not require one to reduce security), runs with bigger safety offsets, is part of the OS and so on.

Apart from some users even reporting issues in CC mode (that we obviously can not solve from our side) CC mode is the best bet for help – but until now also was more or less useless. Because TotalMix FX was not available, the Settings dialog with all the important device settings was not available, and even changing settings at the unit was blocked when USB was connected (stand-alone mode partly inactive).

! This changes with driver 4.20 !

Installing driver 4.20 and connecting the UFX III or MADIface XT II set to Class Compliant mode Settings dialog and TotalMix FX stay fully functional to configure the device. But audio now uses Apple’s Class compliant driver. The Settings dialog then no longer shows the driver version but Apple CC to clearly indicate the active mode.


https://www.archiv.rme-audio.de/images/mac_v420_rme.png https://www.archiv.rme-audio.de/images/mac_v420_apple_cc.png


Note that in CC mode latency is a bit higher, the error counters are not available, and DigiCheck NG has no access to playback data.

Also note that with the new UFX III firmware stand-alone mode features now stay available even with USB connected. Only when TotalMix FX communication is detected the settings at the unit are locked and the ARC USB acts according to current TotalMix settings.


Downloads macOS

Note: Driver linked is now 4.26
DriverKit driver: https://www.rme-audio.de/downloads/driv … ac_426.zip

Firmware update: https://www.rme-audio.de/downloads/fut_madiface_mac.zip

Regards
Matthias Carstens
RME

2

Re: macOS DriverKit driver 4.20 (and up) now available

Reserved

Regards
Matthias Carstens
RME

3 (edited by hselters 2025-02-27 13:18:46)

Re: macOS DriverKit driver 4.20 (and up) now available

Great, thank you! Is this also improving those issues for older USB 3 devices like UFX+ or MADIface XT?

4 (edited by scientificsound 2025-02-27 14:09:16)

Re: macOS DriverKit driver 4.20 (and up) now available

After entering my password in the terminal (as described in the readme), I get the following output:

Checking the auxiliary kernel collection...
Error Domain=KMErrorDomain Code=71 "Could not find: Executable for Kext com.softraid.driver.SoftRAID v6.3.1 in codeless kext bundle com.softraid.driver.SoftRAID at /private/var/db/KernelExtensionManagement/Staging/com.softraid.driver.SoftRAID.DtaJDJ/SoftRAID.kext not found
Incompatible architecture: Binary is for x86_64, but needed arch arm64e" UserInfo={NSLocalizedDescription=Could not find: Executable for Kext com.softraid.driver.SoftRAID v6.3.1 in codeless kext bundle com.softraid.driver.SoftRAID at /private/var/db/KernelExtensionManagement/Staging/com.softraid.driver.SoftRAID.DtaJDJ/SoftRAID.kext not found
Incompatible architecture: Binary is for x86_64, but needed arch arm64e}

but every thing seems to have worked, i.e. the installer application says that "The installation was successful" and I was prompted to allow access in the security and privacy tab of the mac settings app.  Should I be worried about this?

thanks!

5

Re: macOS DriverKit driver 4.20 (and up) now available

No, everything ok.

Regards
Matthias Carstens
RME

6

Re: macOS DriverKit driver 4.20 (and up) now available

hselters wrote:

Great, thank you! Is this also improving those issues for older USB 3 devices like UFX+ or MADIface XT?

Via Large option and the ability to better diagnose the issue - yes. But CC mode with TM FX and Settings is not available for these right now.

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

How does the latency in CC mode compare to the Large Safety Offset option?

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Re: macOS DriverKit driver 4.20 (and up) now available

Similar.

Regards
Matthias Carstens
RME

9 (edited by maggie33 2025-03-02 07:48:02)

Re: macOS DriverKit driver 4.20 (and up) now available

Great!Thank you. DK + fut update went flawlessly.
Will check the CC related changes/enhancements, soon.

Edit: Checked the CC mode behavior with UFX III now (TM closed). Works exactly as described in #1.

“Do It For Her”
My Gear: Bontempi Magic light Keyboard

Re: macOS DriverKit driver 4.20 (and up) now available

Excellent Matthias, 
Should I check this with UFXII (revA).   (Noting that in MacOS 15.4beta, there have been a few instances of the USB interrupts relating to drive activity).

----------------
Matt McKenzie-Smith (UFXII, UFX, Babyface) MacStudioUltra OS13.2.1
----------------

11

Re: macOS DriverKit driver 4.20 (and up) now available

You could, this driver is not beta and will be released soon on our website. Yet a macOS beta report at this time does not help as that one clearly has issues on the macOS side (we already sent another bug report about this to Apple).

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

MC wrote:

You could, this driver is not beta and will be released soon on our website. Yet a macOS beta report at this time does not help as that one clearly has issues on the macOS side (we already sent another bug report about this to Apple).

Yes of course, that makes sense

----------------
Matt McKenzie-Smith (UFXII, UFX, Babyface) MacStudioUltra OS13.2.1
----------------

Re: macOS DriverKit driver 4.20 (and up) now available

Nice work to get this going Matthias.

I've just installed. Firmware first then the new driver.

First restart I have 2 Audio HAL issues and 64 data delayed.

Restarted straight away and had no HAL issues and 22 data delayed.

Should I be concerned?

I've had a generally stable system for a few weeks with DK 4.18 and UFX 3.

Kind regards

__________________________
Paul Najar
Jaminajar Music Production
www.jaminajar.com

Re: macOS DriverKit driver 4.20 (and up) now available

Hello, thank you for your hard work. I am using babyface pro. And I bought mac mini m4 pro and want to use it together, but after updating to fireface 4.20, the mixer window of totalmix does not open. It is recognized by fireface, but the mixer window of totalmix does not open, and the Mac does not recognize BF pro. Is there any solution? I set the security settings, but it does not work. And the firmware update does not work either. Why is this happening? Please tell me how to solve it. Please... Please... ㅜㅜ

Re: macOS DriverKit driver 4.20 (and up) now available

joonsccm wrote:

Hello, thank you for your hard work. I am using babyface pro. And I bought mac mini m4 pro and want to use it together, but after updating to fireface 4.20, the mixer window of totalmix does not open. It is recognized by fireface, but the mixer window of totalmix does not open, and the Mac does not recognize BF pro. Is there any solution? I set the security settings, but it does not work. And the firmware update does not work either. Why is this happening? Please tell me how to solve it. Please... Please... ㅜㅜ

https://forum.rme-audio.de/viewtopic.ph … 69#p233769

Regards,
Audio AG Support

16

Re: macOS DriverKit driver 4.20 (and up) now available

Driver 4.20 has been released on our website.

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

I just bought a Macbook air M3 with sequoia, my fireface uc has hardware revision 138. do I still need the kernel update ?

Re: macOS DriverKit driver 4.20 (and up) now available

Stojan wrote:

I just bought a Macbook air M3 with sequoia, my fireface uc has hardware revision 138. do I still need the kernel update ?

4.20 is not a kernel based driver.  It uses a different method called “DriverKit”. If you haven’t installed any drivers yet start with 4.20.  (You only use one type of driver, not both.)

Re: macOS DriverKit driver 4.20 (and up) now available

What kind of round trip latencies are people seeing on their M4 Macs with the USB3 interfaces with driver kit 4.20 (and the safety buffer offset set to large)?

Is there an end in sight when this gets straightened out?

Thanks in advance,
Phil

Re: macOS DriverKit driver 4.20 (and up) now available

Palaver wrote:

What kind of round trip latencies are people seeing on their M4 Macs with the USB3 interfaces with driver kit 4.20 (and the safety buffer offset set to large)?

Before asking others for their RTL values and settings, counter question:
What are your values? And if you have issues, which ones?

Palaver wrote:

Is there an end in sight when this gets straightened out?

What do you mean with "this" and with which "end in sight"?

“Do It For Her”
My Gear: Bontempi Magic light Keyboard

Re: macOS DriverKit driver 4.20 (and up) now available

maggie33 wrote:
Palaver wrote:

What kind of round trip latencies are people seeing on their M4 Macs with the USB3 interfaces with driver kit 4.20 (and the safety buffer offset set to large)?

Before asking others for their RTL values and settings, counter question:
What are your values? And if you have issues, which ones?

Palaver wrote:

Is there an end in sight when this gets straightened out?

What do you mean with "this" and with which "end in sight"?

No issues. I plan on buying an M4 and some comments have me concerned on poorer audio performance (glitches and pops) on the new machines. I’d rather not be dealing with large safety buffers as it kind of defeats the purpose of buying a new computer for improved performance. My goal is to move to a native system where I can operate at extremely low buffer settings for plugin amp sims, etc.

My question on ‘line of sight’ simply has to do with getting things working as RME intended. I realize the blame is mostly on Apple here, but perhaps I should wait before changing my setup.

No disrespect intended. RME is leaps and bounds ahead of the competition in terms of support and communication;)

Phil

Re: macOS DriverKit driver 4.20 (and up) now available

Palaver wrote:

My question on ‘line of sight’ simply has to do with getting things working as RME intended. I realize the blame is mostly on Apple here, but perhaps I should wait before changing my setup.

No, there isn't an end in sight.

Apple insist on DK client apps being in user space, where they don't get sufficient priority, so another device can saturate the system scheduler causing buffer underruns (at least the driver reports them now). It's not RME's fault, but also RME have demonstrably been unable to work it out together with Apple. If I understand correctly, the most recent version of Sequoia also seems to have regressed for some users.

If you're not afraid to relax System Integrity Protection settings, use the Kernel Extension (kext) driver and cross your fingers Apple don't disable that mechanism altogether for a long while.

Fireface UCX, Focusrite OctoPre adat, Sound Devices MixPre-D, Mac Studio M2 Max, macOS 14

23 (edited by Palaver 2025-03-15 01:23:49)

Re: macOS DriverKit driver 4.20 (and up) now available

gmarinov wrote:
Palaver wrote:

My question on ‘line of sight’ simply has to do with getting things working as RME intended. I realize the blame is mostly on Apple here, but perhaps I should wait before changing my setup.

No, there isn't an end in sight.

Apple insist on DK client apps being in user space, where they don't get sufficient priority, so another device can saturate the system scheduler causing buffer underruns (at least the driver reports them now). It's not RME's fault, but also RME have demonstrably been unable to work it out together with Apple. If I understand correctly, the most recent version of Sequoia also seems to have regressed for some users.

If you're not afraid to relax System Integrity Protection settings, use the Kernel Extension (kext) driver and cross your fingers Apple don't disable that mechanism altogether for a long while.

Forgive my lack of technical knowledge here, but would plugging into the Mac via USB3 into a thunderbolt port without any other hardware competing for band-width help? As in not having dongles and other hardware devices transferring data on the same T-bolt “buss” lane?

Hopefully, my question makes sense as from my limited understanding, Macs have multiple busses for Thunderbolt (and maybe that’s a way to eliminate the system scheduler problems you referred to above)?

Thanks again,
Phil

24 (edited by waedi 2025-03-15 09:22:06)

Re: macOS DriverKit driver 4.20 (and up) now available

Yes but that's not enough, the computer has a lot going on inside, MAU (Microsoft auto updater) and CreativeCloud for example,
if you want to do a hard test, then try a clean install, copy your system to an external drive and format the internal drive.
Setup macOS and install only the RME driver and a slim DAW like Reaper. Nothing else. And nothing else connected.
Switch off internet and try recording and playback.
Now your computer is at most powerful mode, no interruptions from outside and no task inside.
If it works fine then ad your other software one by one and make audio tests all along.
May be you can identify some problem child ? Let us know...

M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue

Re: macOS DriverKit driver 4.20 (and up) now available

Thank you for the latest driverkit

HDSP9632,HDSP9652 / Fireface UC / Fireface 802

Re: macOS DriverKit driver 4.20 (and up) now available

Palaver wrote:

Forgive my lack of technical knowledge here, but would plugging into the Mac via USB3 into a thunderbolt port without any other hardware competing for band-width help? As in not having dongles and other hardware devices transferring data on the same T-bolt “buss” lane?

I couldn't say. In this forum we haven't been able to establish a pattern to any of this, though what you've pointed out seems like a basic requirement for stable audio. You can try, and you should keep trying, until you reach some conclusion for yourself, and with your specific system and hardware configuration.

Fireface UCX, Focusrite OctoPre adat, Sound Devices MixPre-D, Mac Studio M2 Max, macOS 14

Re: macOS DriverKit driver 4.20 (and up) now available

gmarinov wrote:
Palaver wrote:

Forgive my lack of technical knowledge here, but would plugging into the Mac via USB3 into a thunderbolt port without any other hardware competing for band-width help? As in not having dongles and other hardware devices transferring data on the same T-bolt “buss” lane?

I couldn't say. In this forum we haven't been able to establish a pattern to any of this, though what you've pointed out seems like a basic requirement for stable audio. You can try, and you should keep trying, until you reach some conclusion for yourself, and with your specific system and hardware configuration.

Thanks again!

I notice in your signature that you’re running an M2 machine. Are you using the latest driver kit or did you go the older kernel route with the relaxed security system settings?

If on the driver kit, did you have to do anything specific to get rid of audio glitches?

Regards,
Phil

Re: macOS DriverKit driver 4.20 (and up) now available

Palaver wrote:

I notice in your signature that you’re running an M2 machine. Are you using the latest driver kit or did you go the older kernel route with the relaxed security system settings?

If on the driver kit, did you have to do anything specific to get rid of audio glitches?

I use the kernel extension driver. I tried everything to get rid of audio glitches with the DriverKit driver, but the SSD in my TB dock somehow always manages to create buffer underruns, especially when QuickViewing large images (hardware decoder). I've accepted that the OS will nag me every few months about the driver.

Fireface UCX, Focusrite OctoPre adat, Sound Devices MixPre-D, Mac Studio M2 Max, macOS 14

29

Re: macOS DriverKit driver 4.20 (and up) now available

Driver 4.20 has been removed and replaced by driver 4.21:

- Fix crash of Settings dialog when Offset Large was not initialized

New in TotalMix FX 1.99:

- Talkback routing not correct when Trim had been deactivated

- Fix crash when Talkback source was set back to None

- Added Aux devices for the HDSPe AoX (not relevant for the USB driver)

Regards
Matthias Carstens
RME

30

Re: macOS DriverKit driver 4.20 (and up) now available

Someone must have deleted his posts (after mine #29) so the remaining made no sense anymore - I deleted those three as well.

Regards
Matthias Carstens
RME

31 (edited by adl09 2025-03-18 06:27:04)

Re: macOS DriverKit driver 4.20 (and up) now available

Thanks for 4.21!
Had those crashes and it made me crazy cause i´ve never had any problems with any RME Driver update dating back to HDSP 2496 times. So that was a new experience and i actually was suspecting my Mac would be the problem (not a faulty driver haha).

32 (edited by live-demo 2025-03-22 09:17:01)

Re: macOS DriverKit driver 4.20 (and up) now available

Sorry I missed most of this discussion up to now. My MacBook Pro 2017 is running on Ventura (highest supported) and my new Mac mini came with Sequoia pre-installed. Is the driver kit supporting both computers, or will the firmware update for my FireFace UFX (yes, the original) allow me to work with the new Mac mini while breaking things for the MacBook?

Re: macOS DriverKit driver 4.20 (and up) now available

Got it to work. First updated driver and FW on the old Mac, then the driver of the new one, and we’re off to the races.

Re: macOS DriverKit driver 4.20 (and up) now available

Thank you for the improved DriverKit driver v4.21. Large Safety Offset has not eliminated USB3 audio dropouts between our MacBook M1 Pro and MADIface XT or XT II. The driver is obviously aware of the problems, as it now provides 5 diagnostic counters that increase on every dropout. We presume that solutions are beyond RME's control, having seen many reports of unresolved dropouts between M1 Pro/Max and various USB audio interfaces.

Do we know if more recent Apple processors (e.g. M3, M4) exhibit similar USB3 audio problems?

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

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Re: macOS DriverKit driver 4.20 (and up) now available

You did not try CC mode with the MADIface XT II?

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

Tried CC mode with a MacBook M1 Pro connected directly to the MADIface XT II. Two problems were evident in Audio MIDI Setup:

1. Input and output channels have no names, only numbers (1-100 in, 1-102 out for double speed), and are ordered differently (MADI last) than in USB3 mode (MADI first), causing misalignment with channels in TotalMix and DigiCheck.

2. The MIDI device name ('USB MIDI Device') was different than in USB3 mode ('MADIface XT (#SERIAL#)'), affecting aux device port settings. This problem fixed itself when I updated from MacOS 15.3.2 to MacOS 15.4 just now.

The bigger problem is that TotalMix won't stay connected, so we lose control of the XT II. As soon as we power on aux devices (4 OctaMic XTCs chained to port MADI 1), TotalMix shows "disconnected" in the window title bar and all RME applications (TotalMix, DigiCheck, Fireface USB Settings) and Audio MIDI Setup go into kernel hangs with a spinning beach ball. Neither force-quitting apps or restarting the XT II return things to normal. So far, only a MacOS reboot has made CC mode usable again.

We've had to stop offering recording services after every live recording during the last year was corrupted by USB3 audio dropouts. sad

Do we know if more recent Apple processors (e.g. M3, M4) exhibit similar USB3 audio problems?

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

37

Re: macOS DriverKit driver 4.20 (and up) now available

Thanks for your feedback. Let us check what can be done.

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

carich wrote:

We've had to stop offering recording services after every live recording during the last year was corrupted by USB3 audio dropouts. sad

Do we know if more recent Apple processors (e.g. M3, M4) exhibit similar USB3 audio problems?

The disconnect issue seems to be specific to some M1 MacBooks and Mac Studios. That said, are you not running any kind of redundant backup during your live recordings?

Regards
Daniel Fuchs
RME

Re: macOS DriverKit driver 4.20 (and up) now available

RME Support wrote:
carich wrote:

We've had to stop offering recording services after every live recording during the last year was corrupted by USB3 audio dropouts. sad

Do we know if more recent Apple processors (e.g. M3, M4) exhibit similar USB3 audio problems?

The disconnect issue seems to be specific to some M1 MacBooks and Mac Studios. That said, are you not running any kind of redundant backup during your live recordings?

Also you can use an extra Thunderbolt dock with USB 3, e.g. an OWC thunderbolt 3 Dock.

Regards,
Audio AG Support

Re: macOS DriverKit driver 4.20 (and up) now available

We don't run backups or unnecessary applications during live recording, only TotalMix, DigiCheck, Fireface USB Settings (now that it keeps count of USB3 errors causing dropouts) and Apple Music (to play music during breaks).

We use an OWC thunderbolt 4 dock in our studio and a direct USB connection during at live events. TotalMix won't stay connected in CC mode with either setup. It's not clear what triggers the disconnect, but all RME applications deadlock thereafter. Sometimes Totalmix stays connected with aux devices active and disconnects after launching DigiCheck or Apple Music.

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

Re: macOS DriverKit driver 4.20 (and up) now available

We also run REAPER at live events to record all inputs at double speed for remixing. Launching it in CC mode also can cause deadlock.

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

Re: macOS DriverKit driver 4.20 (and up) now available

See above, the disconnects are a known phenomenon of M1 USB issues.

Not running an independent redundant backup recording on a second device for paid live gigs and ending up having to "stop offering recording service" is careless at best.
I'm not referring to the MacBook running some kind of data backup, but to a second computer or hard drive recorder doing a second recording from whatever available outputs your setup may have, or even just a stereo backup from the main output.
Grab a second-hand Fostex D-160 and install an SSD with adapters. 16 bit, 44/48k, better than nothing. Totally outdated technology, but for this specific purpose, that's just right.

Recordings fail. I've had a laptop that wasn't even online start an update moments before a concert while it was already running and recording. Never really trusted that computer again. Had a backup with a cheap Windows tablet recording to an SD card, saved the day. My current recording laptop runs Windows 8, no such problems.
https://i.imgur.com/SCPHsvT.jpeg

Regards
Daniel Fuchs
RME

Re: macOS DriverKit driver 4.20 (and up) now available

We don't appreciate being called irresponsible, since we're a nonprofit organization that provides free audio engineering services to deserving musicians and bands. I misunderstood that you were asking whether we had a redundant recording path. If we had questions about setting up redundant recording paths, we'd probably be asking them on another manufacturer's forum.

That aside, we tried all of the tests above using a MacBook Air M1 (pre-M1 Pro) configured like our M1 Pro. All of the problems we reported about CC mode still occurred, but we're happy to report that so far USB3 mode has been working with no dropouts and all diagnostic counters staying at 0.

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

44

Re: macOS DriverKit driver 4.20 (and up) now available

carich wrote:

Tried CC mode with a MacBook M1 Pro connected directly to the MADIface XT II.

The bigger problem is that TotalMix won't stay connected, so we lose control of the XT II. As soon as we power on aux devices (4 OctaMic XTCs chained to port MADI 1), TotalMix shows "disconnected" in the window title bar and all RME applications (TotalMix, DigiCheck, Fireface USB Settings) and Audio MIDI Setup go into kernel hangs with a spinning beach ball. Neither force-quitting apps or restarting the XT II return things to normal. So far, only a MacOS reboot has made CC mode usable again.

We were able to reproduce the issue (USB3 CC mode with simultaneous MIDI usage) and are working on a fix. This was unexpected and not found before in testing, very sorry. Once this works CC mode should be a good alternative for you (as you already stated and as expected, clicks/dropouts should be gone).

Regards
Matthias Carstens
RME

Re: macOS DriverKit driver 4.20 (and up) now available

carich wrote:

We don't appreciate being called irresponsible, since we're a nonprofit organization that provides free audio engineering services to deserving musicians and bands. I misunderstood that you were asking whether we had a redundant recording path. If we had questions about setting up redundant recording paths, we'd probably be asking them on another manufacturer's forum.

I did not say "you are", I said "it is", and I did not say "irresponsible". You did not mention any kind of redundant recording setup, so I shared a personal recommendation (from many years of live recording experience) for something that's inexpensive and a no-brainer to operate, if perhaps a bit bulky. If you find that offensive, sorry...

That said, your issues (apart from CC) were clearly caused by your specific (type of) MacBook's USB problems, not the RME hardware or driver.

Regards
Daniel Fuchs
RME

Re: macOS DriverKit driver 4.20 (and up) now available

any experiences with macOS 15.4 and rme dk 4.21?

Fireface UFX+, ARC USB // Fireface 802
MacMini M4Pro, Macbook M1Pro, Sequoia 15.5

Re: macOS DriverKit driver 4.20 (and up) now available

krixel wrote:

any experiences with macOS 15.4 and rme dk 4.21?

It works fine (Digiface USB)

M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue

48 (edited by tadeusz5 2025-04-29 14:46:58)

Re: macOS DriverKit driver 4.20 (and up) now available

Yes, DriverKit 4.20 works on both – Ventura (on your 2017 MBP) and Sequoia (on the Mac mini). Just make sure you update firmware on your UFX or MADIface XT II. That’s key for getting Class Compliant mode with full Settings dialog and TotalMix support.

Older Macs might behave differently – stability can vary. On my side Sequoia + 4.21 + UFX III = rock solid. smile

Re: macOS DriverKit driver 4.20 (and up) now available

Tried CC mode with MADIface XT II firmware upgraded to CC v16 and DriverKit driver 4.22.

carich wrote:

1. Input and output channels have no names, only numbers (1-100 in, 1-102 out for double speed), and are ordered differently (MADI last) than in USB3 mode (MADI first), causing misalignment with channels in TotalMix and DigiCheck.

Would be helpful to have names for I/O channels in Audio MIDI Setup instead of numbers. What we thought were misaligned channels seem to be incorrect loopback offsets. For example, loopback from output channel 1 appears on input channel 5 and so on.

carich wrote:

The bigger problem is that TotalMix won't stay connected, so we lose control of the XT II. As soon as we power on aux devices (4 OctaMic XTCs chained to port MADI 1), TotalMix shows "disconnected" in the window title bar and all RME applications (TotalMix, DigiCheck, Fireface USB Settings) and Audio MIDI Setup go into kernel hangs with a spinning beach ball. Neither force-quitting apps or restarting the XT II return things to normal. So far, only a MacOS reboot has made CC mode usable again.

Although it seems more robust, we are still seeing TotalMix go spontaneously into the "disconnected" state and deadlock, requiring a MacOS reboot to recover.

Little Mountain Music
MacBook Air M1, MacOS 15.5, MADIface XT II, 4 x OctaMic XTC, M-32 DA

50

Re: macOS DriverKit driver 4.20 (and up) now available

carich wrote:

Tried CC mode with MADIface XT II firmware upgraded to CC v16 and DriverKit driver 4.22.

Would be helpful to have names for I/O channels in Audio MIDI Setup instead of numbers..

We agree, but it is not as easy as it seems. These must be in hardware as USB descriptors, which is totally unusual (400 channel names...) and even might require more memory than available. That said we will try to add it if possible.

carich wrote:

What we thought were misaligned channels seem to be incorrect loopback offsets. For example, loopback from output channel 1 appears on input channel 5 and so on..

We'll check this.

carich wrote:

The bigger problem is that TotalMix won't stay connected, so we lose control of the XT II. As soon as we power on aux devices (4 OctaMic XTCs chained to port MADI 1), TotalMix shows "disconnected" in the window title bar...

Although it seems more robust, we are still seeing TotalMix go spontaneously into the "disconnected" state and deadlock, requiring a MacOS reboot to recover.

We'll recheck that as well. Thanks for the feedback.

Regards
Matthias Carstens
RME