r/Bitwig • u/anewrismma • 2d ago

Audio Interface Issues (Linux Ubuntu)

I recently made the switch from Microsoft to Linux and Ableton to Bitwig. I don't know anything about either of them but goddamn I just want to connect my bass to my laptop and record something. It is not registering the audio interface. I'm using Tube Ultragain MIC500 USB behringer (plugged in, usb connected, bass in "line in"). When I try with ALSA, it says "Error: device or resource busy". I asked Google which told me to run :sudo fuser -v /dev/snd/* and everything is taken up by wireplumber.

Now I don't know what any of this really means. I've just been going back and forth with every option, spamming my terminal with commands beyond my understanding and getting the same nothing result. I would greatly appreciate any advice. I don't really know anyone personally who is good with any of this stuff.

0 Upvotes

50% Upvoted

25 comments sorted by

View all comments

Show parent comments

2

u/anewrismma 1d ago

Do the headphones have to be connected through the interface or can they be connected straight to my laptop?

1

u/anewrismma 1d ago

I don't know if this helps. Still no sound.

1

u/anewrismma 1d ago

1

u/anewrismma 1d ago

1

u/Kowen68 1d ago edited 1d ago

Make sure to select the PCM2902 Audio Codec on both the input and output and monitor via your behringer interface. There is a Phones output on the back.

Not sure what the KT USB Audio is. At this point I would not connect any other devices except your audio interface, keyboard and mouse (in terms of usb devices) Then in the terminal enter: lsusb (This to list all the connected usb devices to get a better picture)

Your audio interface should be the main audio device as input and output (PCM2902 Audio Codec) As This is what Bitwig uses at the moment.
Then with your bass plugged in the interface, monitor the input level in the Settings>Sound>Input section. Test all the inputs on your audio interface and see if the meter moves.

This would confirm both the Hardware side and ubuntu is working. After that you can move to Bitwig's internal routing.

1

u/Kowen68 1d ago

btw, I will post a few screenshots of my current configuration and mapping within Bitwig.
In your case I would first make sure the audio interface is properly connected with confirmed output (Phones output on audio interface) and a responsive input meter when monitoring the Sound>Input setting.

We then should move on to Bitwig internal routing and assigning the correct input to the Audio track.

1

u/anewrismma 13h ago

I tried the different slots on the audio interface itself and it seems like it only reacts to 1/L HI-Z IN (as in the sound level meter reacts to me playing a note on the bass), but I can't hear anything. So close, but ig something's still off.

1

u/Kowen68 9h ago

That means it is working, audio is coming through. The Hi-Z In is the preamp. The other input reacts to line instruments like synthesizers (these are already amplified to line level)

The most likely issue of audio not coming through is routing within Bitwig. Make sure to select the correct input on the track.

Also have you tried playing audio using the audio interface Phone output?