Suddenly Having An Issue With USB Audio Input - UMC1820 / MacBook Pro M1 Pro

Gig Performer on Mac OS X
1

My main guitar rig running Gig Performer is a Mac Mini M2 Pro running Sequoia 15.7.2. Gig Performer is working perfectly on that using a Behringer UMC1820 as an audio interface. I setup my MacBook Pro M1 Pro as a backup a couple of months ago. It is running Sequoia 15.7.2 as well and was working perfectly - until last week. Suddenly the input no longer works. All I hear is garbled guitar. Very glitchy and staticy. The UMC1820 output is fine. I connected an audio player block to the output and was able to play music without any audio issues. I switched the input to my laptop microphone and that works perfectly as well. What stopped working is just the audio input. Iā€™ve even tried different channels and theyā€™e all the same.

Hereā€™s the thing though, nothing has changed or been updated anything that Iā€™m aware of. For sanity I loaded an archived project from a month ago and it no longer works either. Still has the same audio glitch issue. I also tried a new project without any plugins - just audio in connected to audio out - and that has the audio gliches. Iā€™ve even tested using the same USB cable to test my Mac Mini and my MacBook Pro. Works on the Mini but not on the MacBook with the same cable.

If I create a new user in MacOS and run Gig Performer it works fine with a blank project. Before I go this route where Iā€™ll have to reinstall all my plugins - about 40 of them - I wanted to see if anyone has experienced this before. It almost sounds like a sample rate sync or buffer size issue but itā€™s only affecting the input, not the output, so Iā€™m not sure thatā€™s related.

Iā€™m hoping someone has experienced something similar and figured out a way to reset this without having to reinstall everything.

2

If creating a new user causes everything to work properly, then something probably got corrupted somewhere under your library folder.

But your plugins should be installed ā€œfor all usersā€ so why would you have to install, them again?

1 Like
3

Thanks for the prompt reply. I checked the filesystem and youā€™re right - itā€™s installed in the /Library folder which is global. Let me try that right now and test it out.

4

Ok, this was not as painful as I expected. As you pointed out I donā€™t need to reinstall the plugins which saves a lot of time. I only need to apply the licenses which isnā€™t that bad. Iā€™m still curious what happened. If this happened during a live show to both Macs it would be a showstopper as I would never have time to rebuild it like this.

I saved the original home directory where the problem lies. Iā€™d like to explore the root cause. Is there documentation that documents every file Gig Performer installs in the Library folder and elsewhere? Iā€™d like to compare them to understand this issue.

5

Only one file

ā€˜~/Library/Application Support/GigPerformer/Gig Performer.settingsā€™

Whatever it is, itā€™s very unlikely to be a Gig Performer issue. Either you have some corruption or something changed and itā€™s most likely related to the audio interface or Audio settings

1 Like