[ThosSounds]

Hi all,

I've had an open support case with Avid for almost six weeks now and they've been unable to solve issues I'm having on a new Mac system. I'm hoping someone here might have some ideas?

New 2018 Mac mini 3.2GHz 6-core i7
64GB 2667 MHz DDR4 memory
SSD startup disk with Mac OS 10.15.7
Pro Tools Ultimate 2020.9.1.123 with 1 HDX Core card
Two Avid HD I/O interfaces
HDX card and two UA cards in a Sonnet HDX version Thunderbolt 3 Echo Express III-D chassis

Here's the whole saga. Forgive me for my wordiness, but I'm trying to leave no stone unturned so to speak.

When I first got the Mac and the Sonnet chassis, the Mac was on OS 10.15.6. The chassis worked fine with the UA cards, but the Mac didn't see the HDX card. I had to send the chassis back to Sonnet twice. At first they thought maybe they'd sent me the non-HDX version, so they sent a different one, but the second time I think they were suspicious about it and did some tests and/or work on it (they didn't really detail this for me). But, third time around things seem to be working on that end. The Mac sees the cards, DigiTest seems happy with the HDX card and I can select HDX as the playback engine in Pro Tools.

The issues.. are somewhat random, but frequent. The only one I can reproduce basically on command is that if I leave Pro Tools idle, and come back to it, almost any command results in an endless spinning Mac OS wheel. I've let it run for several minutes. The only thing that ever changes is that if I bring up the "Force Quit" window, the Mac at first shows Pro Tools is running fine, but then after maybe 1-2 minutes it changes to say Pro Tools is not responding. All my Mac OS Energy saver settings are optimized, nothing is set to go to sleep or go to screensaver, and the time interval here can be pretty short. I've had this crash happen in under five minutes. But it's not consistently that fast. Other times it's happened only when I was away from the machine for something more like 20 minutes or more. When PT does freeze this way, and I force quit, if I try to just restart PT, I get error -6001. I have to restart the machine to get things working again.

Less frequently I have a slightly different error where I can be playing or recording audio and although playback stops audibly, Pro Tools still has some visible signs like it is still playing; LED meters show a frozen signal level, and sometimes the playback button is solid green and the record button is flashing red. In this state I sometimes get a dialog popping up that just says "Pro Tools timed out while trying to stop." (no error code). At this point I can usually do some basic things, like save the session, but most actions bring up the same error message, so I'm left to force quit and restart the machine again.

Avid has asked me multiple times for crash log files, but the machine has none. They keep asking me to look for them in: Finder>Go (hold Option key) Library>Logs>Avid. Interestingly I have two Avid folders there, one is simply labeled "Avid" and one is "Avid®." Both have crash log folders, but both of those have always been empty. Is that normal to have two folders?

I have tried all the "usual" things I'm aware of.. trash preferences, uninstall/reinstall the HD driver and Pro Tools, reset PRAM. At Sonnet's suggestion I also did a total hard drive wipe and reinstalled the OS from the Mac OS recovery procedure, hence why my OS is now the latest: 10.15.7 I've had these same errors with no third party plugins installed, and no extra Avid plugins installed.

At this point, I've had two different Avid techs looking at this and the last thing I head from them about a week ago was that the tech was going to forward my basic Pro Tools .txt log file to "coding." I'm not sure what that entails? Also for what it's worth, this whole hardware system was running fine on my old 2010 Mac Pro (running OS 10.13) which thankfully I still have and might have to go back to.

Any thoughts? Hope so and thanks!

Tom Griesgraber