Add profile for Behringer UMC204HD #128

brndd · 2021-12-12T07:30:45Z

Adds a profile for the Behringer UMC204HD to split a 4-channel output into two outputs, and a 2-channel input into two inputs, as per the physical layout of the device. I have very little idea what I'm doing, so let me know if something looks incorrect (there's one thing that looks incorrect even to me which I shall point out in a comment below). The config does at least work, though.

alsa-info.txt

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf

brndd · 2021-12-12T07:47:51Z

Also, it seems when using this profile the auto-configured profiles for the device (eg. "Pro Audio") become unavailable. Is this a feature or a bug?

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf

brndd · 2021-12-13T00:00:23Z

If I change the inputs as you suggested, the configuration breaks; spa-acp-tool list reports only one available profile and that's the "off" profile, and I get no usable audio streams. I do not know how to get any kind of useful debug information out of the system as to why this breaks the configuration. Any suggestions?

Here's the relevant parts as I modified them:

	pcm.umc204hd_mono_in {
		@args [ CARD CHN0 ]
		@args {
			CARD.type string
			CHN0.type integer
		}
		type dsnoop
		ipc_key 572542
		ipc_perm 0600
		slave {
			pcm {
				type hw
				card $CARD
				device 0
			}
			channels 2
		}
		bindings.0 $CHN0
	}

	pcm.umc204hd_mic1 {
		@args [ CARD ]
		@args.CARD.type string
		type empty
		slave.pcm {
			@func concat
			strings [ "umc204hd_mono_in:" $CARD ",0" ]
		}
	}

	pcm.umc204hd_mic2 {
		@args [ CARD ]
		@args.CARD.type string
		type empty
		slave.pcm {
			@func concat
			strings [ "umc204hd_mono_in:" $CARD ",1" ]
		}
	}

edit: and yeah, that's my alsa-info output. I also attached it in the pull request.

brndd · 2021-12-13T00:30:52Z

I tried adding the volume controls using PlaybackMixerElem and CaptureMixerElem like this, but it doesn't seem to do anything:

SectionDevice."Line1" {
	Comment "Line A"
	Value {
		PlaybackPriority 100
		PlaybackPCM "umc204hd_line1:${CardId}"
		PlaybackMixerElem "Line A"
	}
}

Am I correct in assuming these volume controls would be the ones that show up in alsamixer, and the PlaybackMixerElem should change the name of the control? This is what they look like currently, with labels added for which channels they control:

perexg · 2021-12-13T11:51:40Z

If I change the inputs as you suggested, the configuration breaks; spa-acp-tool list reports only one available profile and that's the "off" profile, and I get no usable audio streams. I do not know how to get any kind of useful debug information out of the system as to why this breaks the configuration. Any suggestions?

You can copy the config in the LibraryConfig to your ~/.asoundrc file and test the PCM using arecord like: arecord -Dumc204hd_mic2:U192k -f dat -c 1 -v a.wav

Am I correct in assuming these volume controls would be the ones that show up in alsamixer, and the PlaybackMixerElem should change the name of the control?

Use amixer -c U192k for example to get control names for MixerElem values.

brndd · 2021-12-13T19:54:38Z

You can copy the config in the LibraryConfig to your ~/.asoundrc file and test the PCM using arecord like: arecord -Dumc204hd_mic2:U192k -f dat -c 1 -v a.wav

Alright, this is strange. When I do it like that (though I had to replace -f dat with -f S32_LE or else it would complain about an unsupported format), the configuration works fine. It records a .wav file that only has one channel. However, if I do the exact same modifications to the live configuration, sound stops working altogether. Here is the .asoundrc: .asoundrc.txt

Use amixer -c U192k for example to get control names for MixerElem values.

I tried defining them like this, but nothing seemed to change. What should I be looking for to begin with? Also, these volume controls also need to be "split"; the "UMC204HD 192k Output" control has 4 channels (FL FR RL RR) when physically the device has two stereo outputs. Is that possible?

SectionDevice."Line1" {
	Comment "Line A"
	Value {
		PlaybackPriority 100
		PlaybackPCM "umc204hd_line1:${CardId}"
		PlaybackMixer "Line A"
		PlaybackMixerElem "UMC204HD 192k Output"
	}
}

SectionDevice."Line2" {
	Comment "Line B"

	Value {
		PlaybackPriority 200
		PlaybackPCM "umc204hd_line2:${CardId}"
		PlaybackMixer "Line B"
		PlaybackMixerElem "UMC204HD 192k Output"
	}
}

perexg · 2021-12-14T12:27:19Z

You can copy the config in the LibraryConfig to your ~/.asoundrc file and test the PCM using arecord like: arecord -Dumc204hd_mic2:U192k -f dat -c 1 -v a.wav

However, if I do the exact same modifications to the live configuration, sound stops working altogether.

We need pipewire logs - it seems that pw does not like S32_LE / mono combination.

I tried defining them like this, but nothing seemed to change.

Remove PlaybackMixer lines. The split may be configured using another alsa-lib's plugin (LibraryConfig):

       ctl.umc204hd {
                @args [ CARD ]
                @args.CARD.type string
                type remap
                child {
                        type hw
                        card $CARD
                }
                map {
                        "name='Line A Playback Volume'"."name='UMC204HD 192k Output Volume'" {
                               vindex.0 0
                               vindex.1 1
                         },
                        "name='Line A Playback Switch'"."name='UMC204HD 192k Output Switch'" {
                               vindex.0 0
                               vindex.1 1
                         },
                        "name='Line B Playback Volume'"."name='UMC204HD 192k Output Volume'" {
                               vindex.0 2
                               vindex.1 3
                         },
                        "name='Line A Playback Switch'"."name='UMC204HD 192k Output Switch'" {
                               vindex.0 2
                               vindex.1 3
                         }
                }
        }

Add lines `PlaybackCTL "umc204hd:${CardId}"' to the appropriate devices.

brndd · 2021-12-15T11:40:58Z

OK, I attempted to add the volume controls (the changes are now in the PR), but I think they still aren't working correctly. I'm not observing any actual effect from adding them, but maybe I'm just not looking in the right places. What does describing the volume controls actually do? What can I do to verify that I've configured them correctly?

We need pipewire logs - it seems that pw does not like S32_LE / mono combination.

~~I tried getting logs out of Pipewire, but it doesn't seem to output anything as to why the config is failing. I'll try asking the Pipewire folks.~~ Asked the Pipewire folks and indeed it seems PW is not trying S32_LE for some reason; spa-acp-tool -vvvv list outputs this (among other things):

Managed to open _ucm0001.umc204hd_mic2:U192k
snd_pcm_hw_params_set_format(Signed 16 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Signed 16 bit Big Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Big Endian) failed: Invalid argument
snd_pcm_hw_params_set_channels(2) failed: Invalid argument
Trying _ucm0001.umc204hd_mic2:U192k without SND_PCM_NO_AUTO_FORMAT ...

EDIT: The actual error seems to have been elsewhere in the output: UCM file does not specify 'CaptureChannels' for device Mic1, assuming stereo. After specifying CaptureChannels, the config works with Pipewire 🥳

EDIT2: Oh, about the ip_key value. How should it be selected? Looking at the documentation, it says it needs to be unique but not much else about what goes into it, so I just generated a random number and used that. Should it be more deterministic than that?

perexg · 2022-03-09T10:27:05Z

OK, I attempted to add the volume controls (the changes are now in the PR), but I think they still aren't working correctly. I'm not observing any actual effect from adding them, but maybe I'm just not looking in the right places. What does describing the volume controls actually do? What can I do to verify that I've configured them correctly?

Just check, if the stereo control maps correctly to the 'UMC204HD 192k Output Volume' and switch: amixer cget name='UMC204HD 192k Output Volume'. It may be useful to put the config to ~/.asoundrc and test it directly using amixer tool like amixer -Dumc204hd:0, where 0 is the ALSA card number.

After specifying CaptureChannels, the config works with Pipewire

The stereo (value 2) is the default. It should be omitted (the functionality should be equivalent).

Oh, about the ip_key value. How should it be selected?

I don't think that there's a mapping scheme for this key. It should be just unique in the whole system.

brndd · 2022-05-03T17:17:59Z

Alright, I think the controls should be right on paper now. Putting the config in ~/.asoundrc and running amixer -Dumc204hd:1 contents shows them, and they seem to correctly map to the controls shown in alsamixer.

However, I still can't actually find the remapped controls I have created (eg. Line A Playback Volume) anywhere when I place the configuration in /usr/share/alsa/ucm2/. Running amixer -c U192k controls does not list them, even if I restart PipeWire/Wireplumber or reboot, and they also aren't visible in alsamixer.

$ amixer -c U192k controls
numid=7,iface=CARD,name='UMC204HD 192k Internal Clock Validity'
numid=8,iface=MIXER,name='Mic Capture Switch'
numid=9,iface=MIXER,name='Mic Capture Switch',index=1
numid=10,iface=MIXER,name='Mic Capture Volume'
numid=11,iface=MIXER,name='Mic Capture Volume',index=1
numid=3,iface=MIXER,name='UMC204HD 192k Output Playback Switch'
numid=4,iface=MIXER,name='UMC204HD 192k Output Playback Switch',index=1
numid=5,iface=MIXER,name='UMC204HD 192k Output Playback Volume'
numid=6,iface=MIXER,name='UMC204HD 192k Output Playback Volume',index=1
numid=2,iface=PCM,name='Capture Channel Map'
numid=1,iface=PCM,name='Playback Channel Map'

Could this be a PipeWire-related issue, since amixer is parsing the configuration just fine when it's in ~/.asoundrc?

Thanks for the help :)

perexg · 2022-05-03T18:19:17Z

Thanks for the feedback.

The ' and " switch should not be necessary (otherwise it's an error somewhere).

This config is not exported as the default alsa-lib configuration for now (so amixer do not see it). It's a private configuration for UCM applications only. I'll propose a solution soon.

Pipewire: What does say spa-acp-tool (use -c argument with the right card number)?

brndd · 2022-05-03T18:55:36Z

The ' and " switch should not be necessary (otherwise it's an error somewhere).

Yeah, this is just something I tried in desperation and didn't undo.

Pipewire: What does say spa-acp-tool (use -c argument with the right card number)?

`spa-acp-tool -c 0 -vvvv info` output (click)

$ spa-acp-tool -c 0 -vvvv info
UCM available for card hw:0
UCM _alibpref=_ucm0001.
Set UCM verb to HiFi
Got CapturePCM for device Mic2: _ucm0001.umc204hd_mic2:U192k
Got PlaybackCTL for device Mic2: _ucm0001.hw:U192k
Got CaptureCTL for device Mic2: _ucm0001.umc204hd:U192k
Got CapturePriority for device Mic2: 100
Got CaptureChannels for device Mic2: 1
No _conflictingdevs for device Mic2
No _supporteddevs for device Mic2
Got CapturePCM for device Mic1: _ucm0001.umc204hd_mic1:U192k
Got PlaybackCTL for device Mic1: _ucm0001.hw:U192k
Got CaptureCTL for device Mic1: _ucm0001.umc204hd:U192k
Got CapturePriority for device Mic1: 200
Got CaptureChannels for device Mic1: 1
No _conflictingdevs for device Mic1
No _supporteddevs for device Mic1
Got PlaybackPCM for device Line2: _ucm0001.umc204hd_line2:U192k
Got PlaybackCTL for device Line2: _ucm0001.umc204hd:U192k
Got PlaybackPriority for device Line2: 100
Got PlaybackChannels for device Line2: 2
Got CaptureCTL for device Line2: _ucm0001.hw:U192k
No _conflictingdevs for device Line2
No _supporteddevs for device Line2
Got PlaybackPCM for device Line1: _ucm0001.umc204hd_line1:U192k
Got PlaybackCTL for device Line1: _ucm0001.umc204hd:U192k
Got PlaybackPriority for device Line1: 200
Got PlaybackChannels for device Line1: 2
Got CaptureCTL for device Line1: _ucm0001.hw:U192k
No _conflictingdevs for device Line1
No _supporteddevs for device Line1
Found UCM profiles
UCM mapping: HiFi: umc204hd_mic2:U192k: source dev Mic2
UCM mapping: HiFi: umc204hd_mic1:U192k: source dev Mic1
UCM mapping: HiFi: umc204hd_line2:U192k: sink dev Line2
UCM mapping: HiFi: umc204hd_line1:U192k: sink dev Line1
Profile HiFi (Default), input=null, output=null priority=8000, supported=yes n_input_mappings=2, n_output_mappings=2
Input HiFi: umc204hd_mic2:U192k: source
Input HiFi: umc204hd_mic1:U192k: source
Output HiFi: umc204hd_line2:U192k: sink
Output HiFi: umc204hd_line1:U192k: sink
Set ucm verb to HiFi
Trying _ucm0001.umc204hd_line2:U192k with SND_PCM_NO_AUTO_FORMAT ...
Managed to open _ucm0001.umc204hd_line2:U192k
Maximum hw buffer size is 375 ms
Set buffer size first (to 4797 samples), period size second (to 1199 samples).
Device umc204hd_stereo_out:U192k,2,3 doesn't support 44100 Hz, changed to 48000 Hz.
Trying _ucm0001.umc204hd_line1:U192k with SND_PCM_NO_AUTO_FORMAT ...
Managed to open _ucm0001.umc204hd_line1:U192k
Maximum hw buffer size is 375 ms
Set buffer size first (to 4797 samples), period size second (to 1199 samples).
Device umc204hd_stereo_out:U192k,0,1 doesn't support 44100 Hz, changed to 48000 Hz.
Trying _ucm0001.umc204hd_mic2:U192k with SND_PCM_NO_AUTO_FORMAT ...
Managed to open _ucm0001.umc204hd_mic2:U192k
snd_pcm_hw_params_set_format(Signed 16 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Signed 16 bit Big Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Big Endian) failed: Invalid argument
Maximum hw buffer size is 375 ms
Set buffer size first (to 4797 samples), period size second (to 1199 samples).
Device umc204hd_mono_in:U192k,1 doesn't support 44100 Hz, changed to 48000 Hz.
Device umc204hd_mono_in:U192k,1 doesn't support sample format s16le, changed to s32le.
Trying _ucm0001.umc204hd_mic1:U192k with SND_PCM_NO_AUTO_FORMAT ...
Managed to open _ucm0001.umc204hd_mic1:U192k
snd_pcm_hw_params_set_format(Signed 16 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Signed 16 bit Big Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Little Endian) failed: Invalid argument
snd_pcm_hw_params_set_format(Float 32 bit Big Endian) failed: Invalid argument
Maximum hw buffer size is 375 ms
Set buffer size first (to 4797 samples), period size second (to 1199 samples).
Device umc204hd_mono_in:U192k,0 doesn't support 44100 Hz, changed to 48000 Hz.
Device umc204hd_mono_in:U192k,0 doesn't support sample format s16le, changed to s32le.
Profile HiFi supported.
Check device Line2 conformance with 0 other devices
First device in combination, number 1
Add port [Out] Line2: Line B
Port [Out] Line2 direction output, priority 100
Adding profile HiFi to port [Out] Line2.
Check device Line2 conformance with 0 other devices
First device in combination, number 1
Port [Out] Line2 direction output, priority 100
Successfully attached to mixer '_ucm0001.umc204hd:U192k'
ALSA device (null) roles: null
Check device Line1 conformance with 0 other devices
First device in combination, number 1
Add port [Out] Line1: Line A
Port [Out] Line1 direction output, priority 200
Adding profile HiFi to port [Out] Line1.
Check device Line1 conformance with 0 other devices
First device in combination, number 1
Port [Out] Line1 direction output, priority 200
ALSA device (null) roles: null
Check device Mic2 conformance with 0 other devices
First device in combination, number 1
Add port [In] Mic2: Input 2
Port [In] Mic2 direction input, priority 100
Adding profile HiFi to port [In] Mic2.
Check device Mic2 conformance with 0 other devices
First device in combination, number 1
Port [In] Mic2 direction input, priority 100
ALSA device (null) roles: null
Check device Mic1 conformance with 0 other devices
First device in combination, number 1
Add port [In] Mic1: Input 1
Port [In] Mic1 direction input, priority 200
Adding profile HiFi to port [In] Mic1.
Check device Mic1 conformance with 0 other devices
First device in combination, number 1
Port [In] Mic1 direction input, priority 200
ALSA device (null) roles: null
Found 0 jacks.
activate profile: HiFi (1)
Set UCM verb to HiFi
Updating mixer path for HiFi: [Out] Line2
Updating mixer path for HiFi: [Out] Line1
Updating mixer path for HiFi: [In] Mic2
Updating mixer path for HiFi: [In] Mic1
Check device Line2 conformance with 0 other devices
First device in combination, number 1
Port [Out] Line2 direction output, priority 100
Adding profile HiFi to port [Out] Line2.
Device: Line B mapping 'Line B' (HiFi: umc204hd_line2:U192k: sink).
Enable ucm device Line2
Check device Line1 conformance with 0 other devices
First device in combination, number 1
Port [Out] Line1 direction output, priority 200
Adding profile HiFi to port [Out] Line1.
Device: Line A mapping 'Line A' (HiFi: umc204hd_line1:U192k: sink).
Enable ucm device Line1
Check device Mic2 conformance with 0 other devices
First device in combination, number 1
Port [In] Mic2 direction input, priority 100
Adding profile HiFi to port [In] Mic2.
Device: Input 2 mapping 'Input 2' (HiFi: umc204hd_mic2:U192k: source).
Enable ucm device Mic2
Check device Mic1 conformance with 0 other devices
First device in combination, number 1
Port [In] Mic1 direction input, priority 200
Adding profile HiFi to port [In] Mic1.
Device: Input 1 mapping 'Input 1' (HiFi: umc204hd_mic1:U192k: source).
Enable ucm device Mic1
Successfully attached to mixer '_ucm0001.hw:0'
ALSA alias mixers: _ucm0001.hw:0 = _ucm0001.hw:U192k
No ELD device found for port [Out] Line2 (0).
No ELD device found for port [Out] Line1 (0).
No ELD device found for port [In] Mic2 (0).
No ELD device found for port [In] Mic1 (0).
card 0: profiles:2 devices:4 ports:4
    properties: (8)
        use-ucm = "true"
        verbose = "true"
        alsa.card = "0"
        alsa.card_name = "UMC204HD 192k"
        alsa.long_card_name = "BEHRINGER UMC204HD 192k at usb-0000:00:14.0-7.3, high speed"
        alsa.driver_name = "snd_usb_audio"
        device.string = "0"
        device.description = "UMC204HD 192k"

perexg · 2022-05-04T09:13:29Z

Thanks, please, try to replace PlaybackCTL with PlaybackMixer. Ditto for capture (CaptureCTL -> CaptureMixer).

perexg · 2022-05-04T09:29:54Z

Also, PlaybackMixerElem and CaptureMixerElem lines are missing. I've tried to make all corrections for a test:

perexg@bed9728

EDIT:

The second patch should resolve amixer / alsamixer controls visibility:

perexg@9723a9b

Link: alsa-project#128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

Link: alsa-project#128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

brndd · 2022-05-04T14:02:11Z

The second patch seems to work! I had to reboot after applying it (systemctl --user restart pipewire{,-pulse} wireplumber didn't seem to be enough), but now the controls appear in alsamixer and amixer, and the desktop volume control applet adjusts them as one would expect:

alsamixer.mp4

amixer -c U192k controls

$ amixer -c U192k controls
numid=15,iface=CARD,name='UMC204HD 192k Internal Clock Validity'
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=16,iface=MIXER,name='Mic Capture Switch'
numid=17,iface=MIXER,name='Mic Capture Switch',index=1
numid=18,iface=MIXER,name='Mic Capture Volume'
numid=19,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=11,iface=MIXER,name='UMC204HD 192k Output Playback Switch'
numid=12,iface=MIXER,name='UMC204HD 192k Output Playback Switch',index=1
numid=13,iface=MIXER,name='UMC204HD 192k Output Playback Volume'
numid=14,iface=MIXER,name='UMC204HD 192k Output Playback Volume',index=1
numid=10,iface=PCM,name='Capture Channel Map'
numid=9,iface=PCM,name='Playback Channel Map'

I would never have figured that out on my own, thanks.

perexg · 2022-05-04T15:57:33Z

Thanks, could you verify both patches so I can apply this to the main repo ?

brndd · 2022-05-04T21:52:38Z

Thanks, could you verify both patches so I can apply this to the main repo ?

I did try both patches, in that I pulled the HEAD of the ucm204 branch. I did also try the first patch on its own, but it did not seem to work by itself; the controls remained invisible in alsamixer/amixer.

perexg · 2022-05-05T07:00:20Z

The first patch should be just a cleanup for your work (merged all changes into one and add missing stuff).

Could you show alsaucm -c hw:U192k dump text for both working configs and ucm204 branch branch?

brndd · 2022-05-05T13:17:40Z

Alright, I tried the first commit by itself again, this time rebooting after applying it, and it seems to work too; the controls appear in alsamixer like they should. I believe I may have forgotten to reboot after trying it before, and clearly that (or restarting some component which I haven't discovered yet) is necessary for the controls to show up.

In other words, I think the second patch (perexg@9723a9b) is not actually necessary; the controls show up in amixer/alsamixer even without it.

HEAD of ucm204 branch (second patch on top of first patch):

$ alsaucm -c hw:U192k dump text
Verb.HiFi {
        Comment Default
        Device.Line1 {
                Comment "Line A"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.default:U192k"
                        PlaybackMixerElem "Line A"
                        PlaybackPCM "_ucm0001.umc204hd_line1:U192k"
                        PlaybackPriority 200
                }
        }
        Device.Line2 {
                Comment "Line B"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.default:U192k"
                        PlaybackMixerElem "Line B"
                        PlaybackPCM "_ucm0001.umc204hd_line2:U192k"
                        PlaybackPriority 100
                }
        }
        Device.Mic1 {
                Comment "Input 1"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.default:U192k"
                        CaptureMixerElem "Input 1"
                        CapturePCM "_ucm0001.umc204hd_mic1:U192k"
                        CapturePriority 200
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
        Device.Mic2 {
                Comment "Input 2"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.default:U192k"
                        CaptureMixerElem "Input 2"
                        CapturePCM "_ucm0001.umc204hd_mic2:U192k"
                        CapturePriority 100
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
}

The first patch (this commit: perexg@bed9728) by itself:

$ alsaucm -c hw:U192k dump text
Verb.HiFi {
        Comment Default
        Device.Line1 {
                Comment "Line A"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.umc204hd:U192k"
                        PlaybackMixerElem "Line A"
                        PlaybackPCM "_ucm0001.umc204hd_line1:U192k"
                        PlaybackPriority 200
                }
        }
        Device.Line2 {
                Comment "Line B"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.umc204hd:U192k"
                        PlaybackMixerElem "Line B"
                        PlaybackPCM "_ucm0001.umc204hd_line2:U192k"
                        PlaybackPriority 100
                }
        }
        Device.Mic1 {
                Comment "Input 1"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.umc204hd:U192k"
                        CaptureMixerElem "Input 1"
                        CapturePCM "_ucm0001.umc204hd_mic1:U192k"
                        CapturePriority 200
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
        Device.Mic2 {
                Comment "Input 2"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.umc204hd:U192k"
                        CaptureMixerElem "Input 2"
                        CapturePCM "_ucm0001.umc204hd_mic2:U192k"
                        CapturePriority 100
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
}

perexg · 2022-05-05T13:54:27Z

You are seeing the cached values and configs. The full state cleanup:

systemctl stop alsa-restore
systemctl stop alsa-state
rm -rf /var/lib/alsa/*
reboot

You may try to remove any additional changes for the UCM config and test, if you there are no new mixer controls.

Then apply my two patches, reboot and check if there are controls and they are functional (changes the mute / volume).

brndd · 2022-05-05T22:34:07Z

OK. I cleared the cache as you suggested and applied the two patches, and the controls work fine. Here's the output of alsaucm -c hw:U192k dump text:

Verb.HiFi {
        Comment Default
        Device.Line1 {
                Comment "Line A"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.default:U192k"
                        PlaybackMixerElem "Line A"
                        PlaybackPCM "_ucm0001.umc204hd_line1:U192k"
                        PlaybackPriority 200
                }
        }
        Device.Line2 {
                Comment "Line B"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        PlaybackCTL "_ucm0001.hw:U192k"
                        PlaybackChannels 2
                        PlaybackMixer "_ucm0001.default:U192k"
                        PlaybackMixerElem "Line B"
                        PlaybackPCM "_ucm0001.umc204hd_line2:U192k"
                        PlaybackPriority 100
                }
        }
        Device.Mic1 {
                Comment "Input 1"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.default:U192k"
                        CaptureMixerElem "Input 1"
                        CapturePCM "_ucm0001.umc204hd_mic1:U192k"
                        CapturePriority 200
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
        Device.Mic2 {
                Comment "Input 2"
                Values {
                        CaptureCTL "_ucm0001.hw:U192k"
                        CaptureChannels 1
                        CaptureMixer "_ucm0001.default:U192k"
                        CaptureMixerElem "Input 2"
                        CapturePCM "_ucm0001.umc204hd_mic2:U192k"
                        CapturePriority 100
                        PlaybackCTL "_ucm0001.hw:U192k"
                }
        }
}

Link: #128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

Link: #128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

perexg · 2022-05-10T15:01:46Z

Merged (9d16a3b, 701775d).

Link: alsa-project#128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

Link: alsa-project#128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Add profile for Behringer UMC204HD

3a796b6

brndd commented Dec 12, 2021

View reviewed changes

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf Outdated Show resolved Hide resolved

Fix path

6529192

perexg requested changes Dec 12, 2021

View reviewed changes

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf Outdated Show resolved Hide resolved

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf Outdated Show resolved Hide resolved

ucm2/USB-Audio/Behringer/UMC204HD-HiFi.conf Outdated Show resolved Hide resolved

Attempt to add volume controls.

ce88a94

brndd added 4 commits December 15, 2021 14:06

Make capture mono.

0ba3f91

Change profile name to 'Default'

2523691

Change playback priority; higher value is higher priority.

01599bd

Remove unnecessary ipc_perm definition, as we just defined the default.

5f042e5

Configure controls (again)

858d51f

perexg pushed a commit to perexg/alsa-ucm-conf that referenced this pull request May 4, 2022

Add profile for Behringer UMC204HD

bed9728

Link: alsa-project#128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

perexg added a commit to perexg/alsa-ucm-conf that referenced this pull request May 4, 2022

Behringer UMC204HD - change the default mixer profile

9723a9b

Link: alsa-project#128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

perexg pushed a commit that referenced this pull request May 10, 2022

Add profile for Behringer UMC204HD

9d16a3b

Link: #128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

perexg added a commit that referenced this pull request May 10, 2022

Behringer UMC204HD - change the default mixer profile

701775d

Link: #128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

perexg closed this May 10, 2022

brndd mentioned this pull request May 14, 2022

Add "Pro Audio" profile for UMC204HD #153

Closed

gregory112 mentioned this pull request Jun 24, 2022

UCM for Behringer UMC204HD broken #177

Closed

Eiseiche mentioned this pull request Jul 12, 2022

Add profile for Behringer UMC202HD #188

Closed

ninelore pushed a commit to ninelore/alsa-ucm-conf-cros that referenced this pull request Jun 10, 2024

Add profile for Behringer UMC204HD

eb14360

Link: alsa-project#128 Signed-off-by: Peter Wedder <burneddi@gmail.com>

ninelore pushed a commit to ninelore/alsa-ucm-conf-cros that referenced this pull request Jun 10, 2024

Behringer UMC204HD - change the default mixer profile

047ade1

Link: alsa-project#128 Signed-off-by: Jaroslav Kysela <perex@perex.cz>

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Add profile for Behringer UMC204HD #128

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Add profile for Behringer UMC204HD #128

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