Audio Problems with Big Sur Firewire800 Pcie Audio Rme Fireface 800 (working in catalina)

lofi483

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Mar 16, 2021
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Hi there! First Post! I recently test updated to Big Sur, everything is working, expect for my firewire audio interface, which is unusable. :)

Gigabyte Aorus Master X570 Bios F30
Amd 3950X
Sapphire 5700xt
Firewire card: StarTech PCIe 1394b
I am using pretty much olbos latest config: https://forum.amd-osx.com/index.php...c-0-6-5-gigabyte-aorus-master-x570.523/page-5 (just changed ram config)

Internal and hmdi audio is working fine.
Fenvi pci card works.
I removed the rme kext and reinstalled it completely, sip is turned off.

It is not showing up in pci cards in the mac os panel, as is the fenvi card, but it is working. So i guess this can be ignored.

----

Everything is working fine in Catalina.

My next logical step would updating to the latest oc version.
If anyone has an idea or can point me in the right direction, i would be very grateful!
Cheers!

 

lofi483

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Mar 16, 2021
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hmm
file under low priorty..

https://forum.rme-audio.de/viewtopic.php?id=31154 it seems to be exactly this problem. "Mac OS Big Sur Beta 2 currently sees the device on a single chip (non bridged) LSI Firewire card - you can see the firewire card and RME Fireface 800 in 'System Report' and Logic Pro, Davinci etc... or Coreaudio System Preferences BUT as soon as you try to use the FF800 you get a big digital screeching noise across all playback/outputs channels (visibly seen with all meters 'up' at two thirds max volume."
 

AMDPUSH

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hmm
file under low priorty..

https://forum.rme-audio.de/viewtopic.php?id=31154 it seems to be exactly this problem. "Mac OS Big Sur Beta 2 currently sees the device on a single chip (non bridged) LSI Firewire card - you can see the firewire card and RME Fireface 800 in 'System Report' and Logic Pro, Davinci etc... or Coreaudio System Preferences BUT as soon as you try to use the FF800 you get a big digital screeching noise across all playback/outputs channels (visibly seen with all meters 'up' at two thirds max volume."
have you try to change the frequency rate, it seems that will stop the noise
 

lofi483

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have you try to change the frequency rate, it seems that will stop the noise
this stops the noise when nothing is playing. When something is playing you can change the pitch of the noise via the sample rate setting.

I just redid the complete open core setup manually (except for the ddsts) for open core 0.6.7, same problem.
I am now looking at the install procedure by rme and system protection. Need to do some reading on how to find out if the kext is properly installed/loaded.

I keep you updated.
 
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lofi483

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updated to Mac OS Big Sur 11.3 Beta 5, same audio Problems. Will try a fresh/clean install tomorrow in a more organised manner.
Edit: I want to add the the firewire card itself works with FW400 and 800 Harddrives. Have tested 2 FW cards with ti chipset so far.

Update: same issues with a clean install. I am putting my experiments on hold for now
 
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lofi483

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Have you installed the drivers for Big Sur? Seems like the older versions will not work so newer ones are required, https://rme-audio.de/downloads/driver_fw_mac_340.zip
Yes, you can see in the first picture (top left) that it is running v 3.40. I removed it many times manually, reinstalled them, added rme as trusted developer, etc.

Basically the driver installs fine without any modification on a clean install. It gets recognised by OS X and the "allow" in security settings pops up on a new install even with sip enabled and not using the trusted dev list as mentioned here: https://forum.rme-audio.de/viewtopic.php?id=30462

The communication to the fireface works and always has. I can control the preamps, settings, phantom power, word clock etc.
Just the sound is a noise blast an all output channels.
Tried 400 and 800 cables, no difference.

I think something with the timing of stream might be wrong but I have no knowledge of how this things should work. (rechecking kernel patches and ram settings would be a guess, and just a guess, and I cannot confirm nor deny any problems with the ssdt's, because I have never built one myself and used the ones by olbo)

In the manual for installing the fireface driver 3.40 for m1, it is mentioned that the firmware security should be set to reduced security but I think this is unrelated with intel and amd.
 
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Shaneee

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Couple of things to check. Which PAT patch is being used in the kernel patches? If it's algrey's then try mine and vica versa. Also check your BIOS settings and disable the Serial option.
 

lofi483

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Screenshot 2021-03-25 at 15.59.44.png
I set algrey's to false and yours to true. Made no difference. The x570 master has no serial port or settings for in the bios i could find. I think this is handled by ddst. Found no reference to uart in registry i/o explorer. This is btw how the Firewire connection looks like:

Screenshot 2021-03-25 at 16.33.35.png
Update: tried the same with the fresh install, same result as for beta 5, both oc 0.6.7
 

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lofi483

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For documentation purposes: I rolled back to 10.15.7 on my main drive and accidentally booted into my Big Sur test install. Changed nothing else.

The sound was working fine, some stutter while moving the mouse, but it was "working"

After a reboot this was not reproduce-able. (same noise as before, connecting and reconnecting the interface changes the type of noise slighty)

Thank you for all suggestions so far.
 

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AMDPUSH

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For documentation purposes: I rolled back to 10.15.7 on my main drive and accidentally booted into my Big Sur test install. Changed nothing else.

The sound was working fine, some stutter while moving the mouse, but it was "working"

After a reboot this was not reproduce-able. (same noise as before, connecting and reconnecting the interface changes the type of noise slighty)

Thank you for all suggestions so far.
ok, i made the test, same problem. I think, if Apple would no longer support the Firewire they would remove the firewire in the report panel. wait and see
 
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