| Luca14 | Hello. Have an issue with a USB soundcard Behringer UMC404HD on UbuntuStudio 20.04LTS fresh desktop install. Everything seems to work except input channels 1&2. Soundcard front signal led blinks fine when signal 1/2 is there and Qjackctl lists 4 inputs and 4 outputs correctly apparently. But input 1&2 do not carry any signal, even when the | 16:46 |
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| Luca14 | soundcard front signal led are blinking (tried Calf and Ardour). Channel 3&4 works fine. Same cards works ok with same Ubuntustudio installation on another laptop. On the desktop, AVLinux live all 4 input channels works fine, Ubuntustudio live most of the times only 3&4, occasionally all 4 channels work without any software/hardware change. Any | 16:46 |
| Luca14 | known issue with that sound card or workaround? Thanks. | 16:46 |
| OvenWerks | Luca14: does alsamixer show any mutes or low levels? | 16:50 |
| OvenWerks | I am assuming you are using qjackctl to start jack? | 16:51 |
| Luca14 | No, actually alsamixer shows far less channels than expected, even in working system. Tried to start jack via Qjackctl, from Arour itself, and eve Ardour Alsa, but same result | 16:52 |
| Luca14 | Is there a place where i can send as screenshot of alsamixer and qjackctl if needed? im not that expert | 16:53 |
| oerheks | imgur.com | 16:59 |
| Luca14 | oerheks Thanks. OvenWerks alsamixer https://imgur.com/a/skhwuVn | 17:01 |
| oerheks | is this the whole alsamixer? F11 full screen might show more sliders | 17:03 |
| Luca14 | OvenWerks first bar was low. You were right. Alsamixer calls channel 1&2 CAPTURE LR MicFront (y) | 17:03 |
| Luca14 | oerheks yes, that's the whole alsamixer. Alsa call the 4 inout channels Mic Front and Rear and L+R. And as OvenWerkshas spotted correctly MicFront level was zero | 17:06 |
| oerheks | oke | 17:06 |
| Luca14 | Thanks, you made my day (y) | 17:06 |
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