alsa-project/alsa-ucm-conf issue #333 was opened from kmarty:

Hi, I have Arturia MiniFuse 2 card allowing playback/capture sample rate in range 44100 - 192000. But using channel name (e.g. `Mic/Line/Inst 1 (L)`, `Main Output L/R`) created by UCM, it offers 48000 only (and in case o playback, it offers S15_LE only).

Looks like something is lost when `SplitPCM` macro is used or so (I have absolutely no idea what's going on here).

Is there any possibility to make it work as it should?

================================= `/proc/asound/card4/stream0` output: ``` ARTURIA MiniFuse 2 at usb-0000:16:00.0-6.2, high speed : USB Audio

Playback: Status: Stop Interface 1 Altset 1 Format: S32_LE Channels: 4 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000 Data packet interval: 125 us Bits: 24 Channel map: FL FR FC LFE Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 1 Implicit Feedback Mode: No Interface 1 Altset 2 Format: S16_LE Channels: 4 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000 Data packet interval: 125 us Bits: 16 Channel map: FL FR FC LFE Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 2 Implicit Feedback Mode: No

Capture: Status: Stop Interface 2 Altset 1 Format: S32_LE Channels: 4 Endpoint: 0x82 (2 IN) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000 Data packet interval: 125 us Bits: 24 Channel map: FL FR FC LFE ```

`alsaucm -c hw:4 dump text` output: ``` Verb.HiFi { Comment "Default Alsa Profile" Device.Line1 { Comment "Main Output L/R" Values { CaptureCTL "_ucm0001.hw:M2" PlaybackCTL "_ucm0001.hw:M2" PlaybackChannels 2 PlaybackPCM "_ucm0001.minifuse12_stereo_out:M2,0,0,1" PlaybackPriority 300 } } Device.Line2 { Comment "Loopback L/R" Values { CaptureCTL "_ucm0001.hw:M2" CaptureChannels 2 CapturePCM "_ucm0001.minifuse12_stereo_in:M2,0,2,3" CapturePriority 200 PlaybackCTL "_ucm0001.hw:M2" PlaybackChannels 2 PlaybackPCM "_ucm0001.minifuse12_stereo_out:M2,0,2,3" PlaybackPriority 200 } } Device.Line3 { Comment "Stereo Input 1+2 L/R" ConflictingDevices [ Mic2, Mic1 ] Values { CaptureCTL "_ucm0001.hw:M2" CaptureChannels 2 CapturePCM "_ucm0001.minifuse12_stereo_in:M2,0,0,1" CapturePriority 100 PlaybackCTL "_ucm0001.hw:M2" } } Device.Mic1 { Comment "Mic/Line/Inst 1 (L)" ConflictingDevices [ Line3 ] Values { CaptureCTL "_ucm0001.hw:M2" CaptureChannels 1 CapturePCM "_ucm0001.minifuse12_mono_in:M2,0,0" CapturePriority 400 PlaybackCTL "_ucm0001.hw:M2" } } Device.Mic2 { Comment "Mic/Line/Inst 2 (R)" ConflictingDevices [ Line3 ] Values { CaptureCTL "_ucm0001.hw:M2" CaptureChannels 1 CapturePCM "_ucm0001.minifuse12_mono_in:M2,0,1" CapturePriority 300 PlaybackCTL "_ucm0001.hw:M2" } } } Verb.Direct { Comment "Direct MiniFuse 2" Device.Direct { Comment "Direct MiniFuse 2" Values { CaptureCTL "_ucm0001.hw:M2" CaptureChannels 4 CapturePCM "_ucm0001.hw:M2" CapturePriority 1000 PlaybackCTL "_ucm0001.hw:M2" PlaybackChannels 4 PlaybackPCM "_ucm0001.hw:M2" PlaybackPriority 1000 } } } ```

Pipewire debug log "spa.alsa:D" excerpts (I have no idea how to get this elsewhere, but it matches to offered reality): ``` [I][12125.973616] spa.alsa | [ alsa-pcm.c: 618 spa_alsa_open()] 0x562ee6e95448: ALSA device open '_ucm0001.minifuse12_mono_in:M2,0,0' capture [I][12125.993003] spa.alsa | [ alsa-pcm.c: 568 probe_pitch_ctl()] minifuse12_mono_in:M2,0,0 could not find ctl device: No such file or directory [D][12125.993047] spa.alsa | [ alsa-pcm.c: 1048 debug_hw_params()] enum_pcm_formats: [D][12125.993065] spa.alsa | [ alsa-pcm.c: 469 log_write()] ACCESS: MMAP_INTERLEAVED MMAP_NONINTERLEAVED RW_INTERLEAVED RW_NONINTERLEAVED [D][12125.993075] spa.alsa | [ alsa-pcm.c: 469 log_write()] FORMAT: S32_LE [D][12125.993082] spa.alsa | [ alsa-pcm.c: 469 log_write()] SUBFORMAT: STD [D][12125.993089] spa.alsa | [ alsa-pcm.c: 469 log_write()] SAMPLE_BITS: 32 [D][12125.993095] spa.alsa | [ alsa-pcm.c: 469 log_write()] FRAME_BITS: 32 [D][12125.993101] spa.alsa | [ alsa-pcm.c: 469 log_write()] CHANNELS: 1 [D][12125.993107] spa.alsa | [ alsa-pcm.c: 469 log_write()] RATE: 48000 [D][12125.993113] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_TIME: 10000 [D][12125.993119] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_SIZE: 480 [D][12125.993124] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_BYTES: 1920 [D][12125.993130] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIODS: [2 50] [D][12125.993136] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_TIME: [20000 500000] [D][12125.993142] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_SIZE: [960 24000] [D][12125.993148] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_BYTES: [3840 96000] [D][12125.993153] spa.alsa | [ alsa-pcm.c: 469 log_write()] TICK_TIME: ALL [D][12125.993165] spa.alsa | [ alsa-pcm.c: 885 add_rate()] min:48000 max:48000 min-allowed:0 scale:1 interleave:1 all:0 [D][12125.993172] spa.alsa | [ alsa-pcm.c: 909 add_rate()] rate:48000 multi:1 card:0 def:0 [D][12125.993180] spa.alsa | [ alsa-pcm.c: 963 add_channels()] channels (1 1) default:1 all:0 [D][12125.993187] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x562ee6e95448: position 0 2 ``` ``` [I][12125.637937] spa.alsa | [ alsa-pcm.c: 618 spa_alsa_open()] 0x562ee6e24218: ALSA device open '_ucm0001.minifuse12_stereo_out:M2,0,0,1' playback [I][12125.657353] spa.alsa | [ alsa-pcm.c: 568 probe_pitch_ctl()] minifuse12_stereo_out:M2,0,0,1 could not find ctl device: No such file or directory [D][12125.657379] spa.alsa | [ alsa-pcm.c: 1048 debug_hw_params()] enum_pcm_formats: [D][12125.657398] spa.alsa | [ alsa-pcm.c: 469 log_write()] ACCESS: MMAP_INTERLEAVED MMAP_NONINTERLEAVED RW_INTERLEAVED RW_NONINTERLEAVED [D][12125.657407] spa.alsa | [ alsa-pcm.c: 469 log_write()] FORMAT: S16_LE [D][12125.657414] spa.alsa | [ alsa-pcm.c: 469 log_write()] SUBFORMAT: STD [D][12125.657420] spa.alsa | [ alsa-pcm.c: 469 log_write()] SAMPLE_BITS: 16 [D][12125.657427] spa.alsa | [ alsa-pcm.c: 469 log_write()] FRAME_BITS: 32 [D][12125.657433] spa.alsa | [ alsa-pcm.c: 469 log_write()] CHANNELS: 2 [D][12125.657439] spa.alsa | [ alsa-pcm.c: 469 log_write()] RATE: 48000 [D][12125.657445] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_TIME: 10000 [D][12125.657452] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_SIZE: 480 [D][12125.657458] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_BYTES: 1920 [D][12125.657463] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIODS: [2 50] [D][12125.657468] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_TIME: [20000 500000] [D][12125.657474] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_SIZE: [960 24000] [D][12125.657481] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_BYTES: [3840 96000] [D][12125.657488] spa.alsa | [ alsa-pcm.c: 469 log_write()] TICK_TIME: ALL [D][12125.657499] spa.alsa | [ alsa-pcm.c: 885 add_rate()] min:48000 max:48000 min-allowed:0 scale:1 interleave:1 all:0 [D][12125.657507] spa.alsa | [ alsa-pcm.c: 909 add_rate()] rate:48000 multi:1 card:0 def:0 [D][12125.657514] spa.alsa | [ alsa-pcm.c: 963 add_channels()] channels (2 2) default:2 all:0 [D][12125.657521] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x562ee6e24218: position 0 3 [D][12125.657528] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x562ee6e24218: position 1 4 ```

Without matching UCM profile the in/outs offers the full range (but everything is mapped as "surround" 4-channel): ``` [D][13133.383190] spa.alsa | [ alsa-pcm.c: 1346 spa_alsa_enum_format()] opened:0 format:0 started:0 [I][13133.383199] spa.alsa | [ alsa-pcm.c: 618 spa_alsa_open()] 0x5629c57893f8: ALSA device open 'surround40:4' capture [I][13133.384911] spa.alsa | [ alsa-pcm.c: 568 probe_pitch_ctl()] surround40:4 could not find ctl device: No such file or directory [D][13133.384928] spa.alsa | [ alsa-pcm.c: 1048 debug_hw_params()] enum_pcm_formats: [D][13133.384941] spa.alsa | [ alsa-pcm.c: 469 log_write()] ACCESS: MMAP_INTERLEAVED RW_INTERLEAVED [D][13133.384947] spa.alsa | [ alsa-pcm.c: 469 log_write()] FORMAT: S32_LE [D][13133.384951] spa.alsa | [ alsa-pcm.c: 469 log_write()] SUBFORMAT: STD [D][13133.384955] spa.alsa | [ alsa-pcm.c: 469 log_write()] SAMPLE_BITS: 32 [D][13133.384959] spa.alsa | [ alsa-pcm.c: 469 log_write()] FRAME_BITS: 128 [D][13133.384963] spa.alsa | [ alsa-pcm.c: 469 log_write()] CHANNELS: 4 [D][13133.384967] spa.alsa | [ alsa-pcm.c: 469 log_write()] RATE: [44100 192000] [D][13133.384970] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_TIME: [125 1000000] [D][13133.384974] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_SIZE: [6 192000] [D][13133.384978] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_BYTES: [96 3072000] [D][13133.384982] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIODS: [2 1024] [D][13133.384986] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_TIME: (62 2000000] [D][13133.384990] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_SIZE: [12 384000] [D][13133.384993] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_BYTES: [192 6144000] [D][13133.384997] spa.alsa | [ alsa-pcm.c: 469 log_write()] TICK_TIME: ALL [D][13133.385004] spa.alsa | [ alsa-pcm.c: 885 add_rate()] min:44100 max:192000 min-allowed:0 scale:1 interleave:1 all:0 [D][13133.385009] spa.alsa | [ alsa-pcm.c: 909 add_rate()] rate:48000 multi:1 card:0 def:0 [D][13133.385014] spa.alsa | [ alsa-pcm.c: 963 add_channels()] channels (4 4) default:4 all:0 [D][13133.385018] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57893f8: position 0 3 [D][13133.385022] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57893f8: position 1 4 [D][13133.385026] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57893f8: position 2 12 [D][13133.385030] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57893f8: position 3 13 ``` ``` [D][13133.381023] spa.alsa | [ alsa-pcm.c: 1346 spa_alsa_enum_format()] opened:0 format:0 started:0 [I][13133.381032] spa.alsa | [ alsa-pcm.c: 618 spa_alsa_open()] 0x5629c57650b8: ALSA device open 'surround40:4' playback [I][13133.382756] spa.alsa | [ alsa-pcm.c: 568 probe_pitch_ctl()] surround40:4 could not find ctl device: No such file or directory [D][13133.382772] spa.alsa | [ alsa-pcm.c: 1048 debug_hw_params()] enum_pcm_formats: [D][13133.382786] spa.alsa | [ alsa-pcm.c: 469 log_write()] ACCESS: MMAP_INTERLEAVED RW_INTERLEAVED [D][13133.382792] spa.alsa | [ alsa-pcm.c: 469 log_write()] FORMAT: S16_LE S32_LE [D][13133.382796] spa.alsa | [ alsa-pcm.c: 469 log_write()] SUBFORMAT: STD [D][13133.382800] spa.alsa | [ alsa-pcm.c: 469 log_write()] SAMPLE_BITS: [16 32] [D][13133.382804] spa.alsa | [ alsa-pcm.c: 469 log_write()] FRAME_BITS: [64 128] [D][13133.382808] spa.alsa | [ alsa-pcm.c: 469 log_write()] CHANNELS: 4 [D][13133.382812] spa.alsa | [ alsa-pcm.c: 469 log_write()] RATE: [44100 192000] [D][13133.382816] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_TIME: [125 1000000] [D][13133.382820] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_SIZE: [6 192000] [D][13133.382824] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIOD_BYTES: [64 3072000] [D][13133.382827] spa.alsa | [ alsa-pcm.c: 469 log_write()] PERIODS: [2 1024] [D][13133.382831] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_TIME: (62 2000000] [D][13133.382835] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_SIZE: [12 384000] [D][13133.382839] spa.alsa | [ alsa-pcm.c: 469 log_write()] BUFFER_BYTES: [96 6144000] [D][13133.382843] spa.alsa | [ alsa-pcm.c: 469 log_write()] TICK_TIME: ALL [D][13133.382850] spa.alsa | [ alsa-pcm.c: 885 add_rate()] min:44100 max:192000 min-allowed:0 scale:1 interleave:1 all:0 [D][13133.382855] spa.alsa | [ alsa-pcm.c: 909 add_rate()] rate:48000 multi:1 card:0 def:0 [D][13133.382859] spa.alsa | [ alsa-pcm.c: 963 add_channels()] channels (4 4) default:4 all:0 [D][13133.382864] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57650b8: position 0 3 [D][13133.382868] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57650b8: position 1 4 [D][13133.382872] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57650b8: position 2 12 [D][13133.382876] spa.alsa | [ alsa-pcm.c: 1036 add_channels()] 0x5629c57650b8: position 3 13 ```

Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/333 Repository URL: https://github.com/alsa-project/alsa-ucm-conf