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TOPIC: Can't record audio

Can't record audio 3 years 8 months ago #33172

  • alx49
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I can't record any audio from my uma8. Audio recorder just stall. Notebook mic works fine. The same situation on other linux machine.

At the same time mic detects sound direction, according to led. I can connect to mic using MicArray tool and Control Panel.

I tried to flash micArray_xvsm_v1.1_Up without success.

Could you help me, where can be problem?a
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Can't record audio 3 years 8 months ago #33181

  • juangomez
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Hello I've also been working with the Uma 8 on Linux, but Minidsp says that they cant give any support on Linux.... :/
Here you can find their answer:
Tech support team replied:
Hello Juan

unfortunately we don’t provide support for Linux, but we do know that it’s indeed working perfectly fine as quite a lot of our customers are using Linux for their applications.
Check out maybe our app note on how to enable Google Assistant on the RPI. Some hints maybe?
It sounds like a simple limitation of the ALSA setup on your PC. The UMA-8 is plug&play with ALSA 2 knowing it’s compliant to UAC2.

Hoping this info helps

Best Regards


I'm not flashing the drivers but I'm using the ALSA drivers. Try updating to the last ALSA drivers on your Ubuntu and the using alsamixer or arecord to make tests.

Good luck.

PD I want to use the windows drivers on a windows computer to be able to update the firmware, but the User Download page doesnt seem to work for me (or others.. we created 3 separate accounts so far). Can you please send me the drivers? :)
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Can't record audio 1 year 1 month ago #47625

  • mikemaul
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This worked for me:
1. Run arecord -l to look at input devices
arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: SpkUAC20 [miniDSP VocalFusion Spk (UAC2.0], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

2. set input device in .asoundrc, mine looks like
pcm.!default {
type asym
playback.pcm {
type plug
slave.pcm "output"
capture.pcm "mic"
pcm.mic {
type plug
slave {
pcm "hw:1,0"
pcm.output {
type bluealsa
device "D4:F5:47:AF:41:56"
profile "a2dp"

ctl.!default {
type bluealsa

3. Test with:
arecord --format S16_LE test.wav

Getting all this to play nice with your Pulse Audio & GUI Mixers is something I have not figured out quite yet as Linux sound architecture is new to me and so far it looks like a bit of a hot mess.

But is a step forward....

Next ad open letter to MiniUSP Support:
Dear MiniDSP Support

Respectfully I understand your initial commitment on Linux support but....
Raspberry PI Rasberrian is going to probably be a majority of your clients Linux distributions. It would go along way to making your product more attractive to the maker community if you provided support for this distribution and would also provide some coverage to to Debian and Ubuntu distributions. In addition it is trivial cost wise for you to support/replicate configurations this as PI's cost $35 USD. I'm just saying..

It's an awesome piece of kit you have produced, disappointed in the documentation with regards to the level of technical level of detail of your documentation (for example like what do switches 1-4 do, how do you control the light ring?). I am further saddened by the lack of source code for drivers.

I am a fan, this is some awesome kit I want it to get better and for that matter I can probably make it better with or with out you. But doing a few of the things I mentioned will endear you to the community and help sales. If you really think about it while you kit is good, it is not magic or unique, if it is not usable by the maker community they, someone else will fill the niche.

Just saying....
Last Edit: 1 year 1 month ago by mikemaul.
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