Behringer UMC204HD with Devuan Excalibur install and Alsa.

igorzwx · 2026-01-21 16:22:24

Post the output of this commad:

ls -1 /usr/share/alsa/ucm2/USB-Audio/Behringer

If it is in the list, it is supported.

If not, you may try to compile:

$ apt source alsa-ucm-conf --simulate
Reading package lists... Done
NOTICE: 'alsa-ucm-conf' packaging is maintained in the 'Git' version control system at:
https://salsa.debian.org/alsa-team/alsa-ucm-conf.git
Please use:
git clone https://salsa.debian.org/alsa-team/alsa-ucm-conf.git
to retrieve the latest (possibly unreleased) updates to the package.
Need to get 47.6 kB of source archives.
Fetch source alsa-ucm-conf

Last edited by igorzwx (2026-01-21 16:28:05)

devuan_dk_fan · 2026-01-21 16:41:06

$ ls -1 /usr/share/alsa/ucm2/USB-Audio/Behringer
Flow8-Recording.conf
Flow8-Recording-Hifi.conf
Flow8-Streaming.conf
Flow8-Streaming-Hifi.conf
UMC202HD.conf
UMC202HD-HiFi.conf
UMC204HD.conf
UMC204HD-HiFi.conf
UMC404HD.conf
UMC404HD-HiFi.conf

It looks like all three are supported with HiFi output in Devuan Excalibur...

igorzwx · 2026-01-21 16:56:44

Post the output of these commands:

dmesg | grep -i ucm

whereis alsaucm

alsaucm reload

alsaucm -c U192k list _verbs

alsaucm -c U192k set _verb HiFi

amixer -c U192k controls

Last edited by igorzwx (2026-01-21 18:14:10)

devuan_dk_fan · 2026-01-21 19:59:20

OK, here they are.

# dmesg | grep -i ucm

Nothing returned.

$ whereis alsaucm
alsaucm: /usr/bin/alsaucm /usr/share/man/man1/alsaucm.1.gz

$ alsaucm reload
ALSA lib parser.c:244:(error_node) UCM is not supported for this HDA model (HD-Audio Generic at 0xd05c8000 irq 81)
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6
alsaucm: error failed to open sound card hw:0: No such device or address

$ alsaucm -c U192k list _verbs
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import U192k use case configuration -2
alsaucm: error failed to open sound card U192k: No such file or directory

$ alsaucm -c U192k set _verb HiFi
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import U192k use case configuration -2
alsaucm: error failed to open sound card U192k: No such file or directory

$ amixer -c U192k controls
numid=19,iface=CARD,name='Internal Validity'
numid=15,iface=MIXER,name='PCM Playback Switch'
numid=16,iface=MIXER,name='PCM Playback Switch',index=1
numid=17,iface=MIXER,name='PCM Playback Volume'
numid=18,iface=MIXER,name='PCM Playback Volume',index=1
numid=2,iface=MIXER,name='Line A Playback Switch'
numid=1,iface=MIXER,name='Line A Playback Volume'
numid=4,iface=MIXER,name='Line B Playback Switch'
numid=3,iface=MIXER,name='Line B Playback Volume'
numid=20,iface=MIXER,name='Mic Capture Switch'
numid=21,iface=MIXER,name='Mic Capture Switch',index=1
numid=22,iface=MIXER,name='Mic Capture Volume'
numid=23,iface=MIXER,name='Mic Capture Volume',index=1
numid=6,iface=MIXER,name='Input 1 Capture Switch'
numid=5,iface=MIXER,name='Input 1 Capture Volume'
numid=8,iface=MIXER,name='Input 2 Capture Switch'
numid=7,iface=MIXER,name='Input 2 Capture Volume'
numid=10,iface=MIXER,name='Input 3 Capture Switch'
numid=9,iface=MIXER,name='Input 3 Capture Volume'
numid=12,iface=MIXER,name='Input 4 Capture Switch'
numid=11,iface=MIXER,name='Input 4 Capture Volume'
numid=14,iface=PCM,name='Capture Channel Map'
numid=13,iface=PCM,name='Playback Channel Map'

igorzwx · 2026-01-21 20:05:22

alsaucm: error failed to open sound card U192k: No such file or directory

It is not connected.

Check

cat /proc/asound/cards

It might be a hotplug issue. Try unplugging and plugging the device back in, then check

cat /proc/asound/cards

When the card was connected, the command

amixer -c U192k controls

printed mixer controls for it, including inputs (mic).

Last edited by igorzwx (2026-01-21 20:22:26)

devuan_dk_fan · 2026-01-21 20:46:12

It is still connected:

$ cat /proc/asound/cards
 0 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c8000 irq 81
 1 [Generic_1      ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c0000 irq 82
 2 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:08:00.3-1, high speed

I haven't tried unplugging the USB cable, but it still works:

$ amixer -c U192k controls
numid=19,iface=CARD,name='Internal Validity'
numid=15,iface=MIXER,name='PCM Playback Switch'
numid=16,iface=MIXER,name='PCM Playback Switch',index=1
numid=17,iface=MIXER,name='PCM Playback Volume'
numid=18,iface=MIXER,name='PCM Playback Volume',index=1
numid=2,iface=MIXER,name='Line A Playback Switch'
numid=1,iface=MIXER,name='Line A Playback Volume'
numid=4,iface=MIXER,name='Line B Playback Switch'
numid=3,iface=MIXER,name='Line B Playback Volume'
numid=20,iface=MIXER,name='Mic Capture Switch'
numid=21,iface=MIXER,name='Mic Capture Switch',index=1
numid=22,iface=MIXER,name='Mic Capture Volume'
numid=23,iface=MIXER,name='Mic Capture Volume',index=1
numid=6,iface=MIXER,name='Input 1 Capture Switch'
numid=5,iface=MIXER,name='Input 1 Capture Volume'
numid=8,iface=MIXER,name='Input 2 Capture Switch'
numid=7,iface=MIXER,name='Input 2 Capture Volume'
numid=10,iface=MIXER,name='Input 3 Capture Switch'
numid=9,iface=MIXER,name='Input 3 Capture Volume'
numid=12,iface=MIXER,name='Input 4 Capture Switch'
numid=11,iface=MIXER,name='Input 4 Capture Volume'
numid=14,iface=PCM,name='Capture Channel Map'
numid=13,iface=PCM,name='Playback Channel Map'

Only rebooted since last post.

igorzwx · 2026-01-21 21:15:47

Do you want to enable HiFi profile?

alsaucm reload

alsaucm -c U192k list _verbs

alsaucm -c U192k set _verb HiFi

devuan_dk_fan · Yesterday 06:52:03

Hmmm. I ran

$ alsaucm reload

No complaints. However, the next command didn't work. Unfortunately I didn't copy the result down. I then rebooted and this is the result:

$ alsaucm reload
ALSA lib parser.c:244:(error_node) UCM is not supported for this HDA model (HD-Audio Generic at 0xd05c8000 irq 81)
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6
alsaucm: error failed to open sound card hw:0: No such device or address

Suddenly, the Behringer card is in the wrong order priority, despite the ~/.asoundrc file supposedly setting the Behringer card to default:

$ cat /proc/asound/cards
 0 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c8000 irq 81
 1 [Generic_1      ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c0000 irq 82
 2 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:08:00.3-1, high speed

I then tried unplugging and replugging the Behringer card, but still nothing:

$ alsaucm reload
ALSA lib parser.c:244:(error_node) UCM is not supported for this HDA model (HD-Audio Generic at 0xd05c8000 irq 81)
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6
alsaucm: error failed to open sound card hw:0: No such device or address

$ cat /proc/asound/cards
 0 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c8000 irq 81
 1 [Generic_1      ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c0000 irq 82
 2 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:08:00.3-1, high speed

Will try another restart.

devuan_dk_fan · Yesterday 06:56:32

After restart:

$ alsaucm reload

Nothing returned.

$ alsaucm -c U192k list _verbs
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import U192k use case configuration -2
alsaucm: error failed to open sound card U192k: No such file or directory

$ cat /proc/asound/cards
 0 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:08:00.3-1, high speed
 1 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c8000 irq 81
 2 [Generic_1      ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c0000 irq 82

Not sure what is going on. Please advise.

igorzwx · Yesterday 10:07:43

You have the correct UCM config files (UMC404HD.conf, UMC404HD-HiFi.conf) in place — but ALSA UCM is not loading them because the card name U192k does not match the expected directory structure.

UCM expects:

/usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf

But your files are in:

/usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD.conf

Fix:
Create a symlink so UCM finds the config:

sudo mkdir -p /usr/share/alsa/ucm2/conf.d/USB-Audio
sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf
sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD-HiFi.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD-HiFi.conf

Then reload:

sudo /etc/init.d/alsa-utils force-reload

Test:

alsaucm -c U192k list _cards

Last edited by igorzwx (Yesterday 10:27:37)

devuan_dk_fan · Yesterday 10:25:14

$ alsaucm -n -b - <<EOM
open U192k
set _verb HiFi
list _devices
EOM
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import U192k use case configuration -2
alsaucm: error failed to open sound card U192k: No such file or directory

No dice.

igorzwx · Yesterday 10:28:16

see above _https://dev1galaxy.org/viewtopic.php?pid=61493#p61493

ALSA UCM2 expects the configuration to be in /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf when using the modern conf.d scheme.

From the official ucm.conf and documentation:

UCM2 uses conf.d/${CardDriver}/${CardLongName}.conf as the primary lookup path.
Your card’s driver is USB-Audio, so UCM searches in conf.d/USB-Audio/.
Even though you have UMC404HD.conf in /usr/share/alsa/ucm2/USB-Audio/Behringer/, it won’t be found unless symlinked into conf.d/USB-Audio/.

On Deadalus, the folder /usr/share/alsa/ucm2/conf.d/USB-Audio already exists, but it has only one file inside

$ ls /usr/share/alsa/ucm2/conf.d/USB-Audio 
USB-Audio.conf

$ file /usr/share/alsa/ucm2/conf.d/USB-Audio/USB-Audio.conf
/usr/share/alsa/ucm2/conf.d/USB-Audio/USB-Audio.conf: symbolic link to ../../USB-Audio/USB-Audio.conf

Try to create symlinks so UCM finds the config:

sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf
sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD-HiFi.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD-HiFi.conf

Then reload ALSA

sudo /etc/init.d/alsa-utils force-reload

Now alsaucm -c U192k list _cards may work.

Last edited by igorzwx (Yesterday 12:40:20)

devuan_dk_fan · Yesterday 14:30:43

Alsa refuses to cooperate:

$ alsaucm -c U192k list _cards
ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import U192k use case configuration -2
alsaucm: error failed to open sound card U192k: No such file or directory

The sound card is now default again:

$ cat /proc/asound/cards
 0 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:08:00.3-1, high speed
 1 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c8000 irq 81
 2 [Generic_1      ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xd05c0000 irq 82

The symlinks appear to be correct:

$ ls /usr/share/alsa/ucm2/conf.d/USB-Audio/
UMC404HD.conf  UMC404HD-HiFi.conf  USB-Audio.conf

Last edited by devuan_dk_fan (Yesterday 14:36:18)

igorzwx · Yesterday 23:58:44

What is your version?

alsaucm --version

apt-cache show alsa-ucm-conf | grep Version

_https://github.com/alsa-project/alsa-ucm-conf/issues/564#issuecomment-3016922013
Hi, this has been broken for a while. It affects UMC204HD and UMC404HD at least but possibly other cards too.
The last working release is v1.2.12.
v1.2.12:
$ amixer -c U192k controls
...

Add profile for Behringer UMC204HD #128
_https://github.com/alsa-project/alsa-ucm-conf/pull/128

Last edited by igorzwx (Today 00:14:54)

greenjeans · Today 00:34:21

I have this exact same audio interface. If your only using alsa try greenjeans AlsaTune gui. It picked up mine straight away and it is very loud with my behringer truth monitors. I'm using devuan 5 not 6

At minimum this would be a good troubleshooting step. As long as the OP returned everything to the original default first after this 2 page ordeal. Download it, delete any existing .asoundrc or .asound.conf files, install and run the app, on first run it will detect lack of .asoundrc and offer to install the one that comes with the package, let it do so. Check sound with test tone. Click the "Soundcard" button to open a window to select cards and see if the Behringer is there, if so then highlight it and apply and then check sound again.

ETA: Big caveat, if you are running a DE that has it's own built-in mixer AlsaTune won't run right, won't hurt anything but you won't have its extended functionality for the most part. Also goes without saying, but it's not compatible with Pulse or Pipe. If you're running LXDE you should be fine.

If you're running LXDE using PcmanFM for your file-manager, then boy-o-boy do I ever have some scripts to share with you.

Last edited by greenjeans (Today 00:52:27)

igorzwx · Today 03:02:50

As noted in the GitHub issue
_https://github.com/alsa-project/alsa-ucm-conf/issues/564#issuecomment-3016922013
when ALSA is broken, PipeWire users are affected — and AlsaTune may not resolve the underlying issue.

devuan_dk_fan · Today 08:32:15

$ alsaucm --version
alsaucm: version 1.2.14

$ apt-cache show alsa-ucm-conf | grep Version
Version: 1.2.14-1

Broken *!#£? Any possibility of pining this alsa with earlier version of alsaucm? Other work around?

igorzwx · Today 11:27:52

It was already patched, because you have controls

$ amixer -c U192k controls
numid=19,iface=CARD,name='Internal Validity'
numid=15,iface=MIXER,name='PCM Playback Switch'
numid=16,iface=MIXER,name='PCM Playback Switch',index=1
numid=17,iface=MIXER,name='PCM Playback Volume'
numid=18,iface=MIXER,name='PCM Playback Volume',index=1
numid=2,iface=MIXER,name='Line A Playback Switch'
numid=1,iface=MIXER,name='Line A Playback Volume'
numid=4,iface=MIXER,name='Line B Playback Switch'
numid=3,iface=MIXER,name='Line B Playback Volume'
numid=20,iface=MIXER,name='Mic Capture Switch'
numid=21,iface=MIXER,name='Mic Capture Switch',index=1
numid=22,iface=MIXER,name='Mic Capture Volume'
numid=23,iface=MIXER,name='Mic Capture Volume',index=1
numid=6,iface=MIXER,name='Input 1 Capture Switch'
numid=5,iface=MIXER,name='Input 1 Capture Volume'
numid=8,iface=MIXER,name='Input 2 Capture Switch'
numid=7,iface=MIXER,name='Input 2 Capture Volume'
numid=10,iface=MIXER,name='Input 3 Capture Switch'
numid=9,iface=MIXER,name='Input 3 Capture Volume'
numid=12,iface=MIXER,name='Input 4 Capture Switch'
numid=11,iface=MIXER,name='Input 4 Capture Volume'
numid=14,iface=PCM,name='Capture Channel Map'
numid=13,iface=PCM,name='Playback Channel Map'

It might be possible to use them:

man amixer

$ man amixer | grep EXAMPLES -A17
EXAMPLES
       amixer -c 1 sset Line,0 80%,40% unmute cap
              will set the second soundcard's left line input volume to 80% and right line input to 40%,  unmute  it,
              and select it as a source for capture (recording).

       amixer -c 1 -- sset Master playback -20dB
              will set the master volume of the second card to -20dB.  If the master has multiple channels, all chan‐
              nels are set to the same value.

       amixer -c 1 set PCM 2dB+
              will increase the PCM volume of the second card with 2dB.  When both playback and capture  volumes  ex‐
              ist, this is applied to both volumes.

       amixer -c 2 cset iface=MIXER,name='Line Playback Volume",index=1 40%
              will set the third soundcard's second line playback volume(s) to 40%

       amixer -c 2 cset numid=34 40%
              will set the 34th soundcard element to 40%

AlsaTune may work.

Last edited by igorzwx (Today 11:35:21)

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#26 2026-01-21 16:22:24

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#27 2026-01-21 16:41:06

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#28 2026-01-21 16:56:44

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#29 2026-01-21 19:59:20

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#30 2026-01-21 20:05:22

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#31 2026-01-21 20:46:12

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#32 2026-01-21 21:15:47

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#33 Yesterday 06:52:03

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#34 Yesterday 06:56:32

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#35 Yesterday 10:07:43

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#36 Yesterday 10:25:14

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#37 Yesterday 10:28:16

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#38 Yesterday 14:30:43

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#39 Yesterday 23:58:44

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#40 Today 00:34:21

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#41 Today 03:02:50

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#42 Today 08:32:15

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

#43 Today 11:27:52

Re: Behringer UMC204HD with Devuan Excalibur install and Alsa.

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