beatboxa commented 4 months ago

The newest Motu 828 (28x32) does not appear to have a UCM yet. It is a class compliant USB device; so as a result, it generally "works" at a very basic level; but default channel mappings and profiles do not.

The system appears to default to only 2 channels in and 2 channels out. So, for example, surround playback seems to mix into either the left or right channel.

In qpwgraph, it shows 30 inputs (I believe this includes an additional 2-channel loopback at the end) and 32 outputs, all marked as "AUX#," where # starts with 0. I was able to identify which AUX# corresponds to which input or output on the device, through the use of qpwgraph and the device's built-in digital VU meter.

I have tried to create a UCM or even an asoundrc; but I have no idea what I'm doing. The documentation and examples are not intuitive for me.

Could I collaborate with someone in order to get this audio interface supported? I'd be happy to run any commands and tests you advise on.

perexg commented 4 months ago

Show amixer -c 0 info output (replace zero with your card number - can be determined using e.g. aplay -l).

And show the channel map (separate for the playback and capture direction). It means which channel is router to which input/output connector on your device.

beatboxa commented 4 months ago

output of: amixer -c 0 info:

Card sysdefault:0 'D828'/'MOTU 828 at usb-0000:59:00.0-6, high speed'
  Mixer name    : 'USB Mixer'
  Components    : 'USB07fd:000e'
  Controls      : 1
  Simple ctrls  : 0

beatboxa commented 4 months ago

Channel Map: Output / Playback (AUX# on the left is alsa. Name on the right is from the device)

Images for reference: Motu_828-rear_connections Motu_828-front_connections Motu_828-connection_list

(On the back of the device, these are labelled "MAIN OUT (A)" and are XLR connectors):

AUX0 = Main Out A (L) AUX1 = Main Out A (R)

(On the back of the device, these are labelled "(B)" in the "LINE OUT" section and are balanced 1/4" TRS connectors):

AUX2 = Main Out B / Line Out 3 (L) AUX3 = Main Out B / Line Out 4 (R)

(On the back of the device, these are labelled "LINE OUT" and are balanced 1/4" TRS connectors):

AUX4 = Line Out 5 (L) AUX5 = Line Out 6 (R) AUX6 = Line Out 7 (L) AUX7 = Line Out 8 (R) AUX8 = Line Out 9 (L) AUX9 = Line Out 10 (R)

(On the front of the device, these are 1/4" TRS connectors):

AUX10 = Headphones 1 (L) AUX11 = Headphones 1 (R)

AUX12 = Headphones 2 (L) AUX13 = Headphones 2 (R)

(On the back of the device, this is a single RCA connector, labelled "S/PDIF OUT"):

AUX14 = S/PDIF 1 (L) AUX15 = S/PDIF 2 (R)

(On the back of the device, these are optical connectors.

In ADAT mode, each bank (A & B) is 8 channels

In TOSLink mode (for Bank A only), Bank A will use only 2-channels (16-17)

and Bank B will continue to be 8-channel ADAT

Bank A's mode can be changed in the device's on board menu)

AUX16 = Optical A 1 (L) AUX17 = Optical A 2 (R) AUX18 = Optical A 3 (L) AUX19 = Optical A 4 (R) AUX20 = Optical A 5 (L) AUX21 = Optical A 6 (R) AUX22 = Optical A 7 (L) AUX23 = Optical A 8 (R)

AUX24 = Optical B 1 (L) AUX25 = Optical B 2 (R) AUX26 = Optical B 3 (L) AUX27 = Optical B 4 (R) AUX28 = Optical B 5 (L) AUX29 = Optical B 6 (R) AUX30 = Optical B 7 (L) AUX31 = Optical B 8 (R)

beatboxa commented 4 months ago

Channel Map: Input / Capture (AUX# on the left is alsa. Name on the right is on the device) (See the Output post above for reference images)

(On the front of the device, these are Combo (XLR + 1/4" TRS) connectors

(On the back of the device, these are paired with the "MIC INSERT" balanced 1/4" TRS connectors):

AUX0 = Mic / Line / Instrument 1 (L) AUX1 = Mic / Line / Instrument 2 (R)

(On the back of the device, these are labelled "LINE IN" and are balanced 1/4" TRS connectors:

AUX2 = Line In 3 (L) AUX3 = Line In 4 (R) AUX4 = Line In 5 (L) AUX5 = Line In 6 (R) AUX6 = Line In 7 (L) AUX7 = Line In 8 (R) AUX8 = Line In 9 (L) AUX9 = Line In 10 (R)

(This is an internal loopback, with no physical inputs)

AUX10 = Loopback (L) AUX11 = Loopback (R)

(On the back of the device, this is a single RCA connector, labelled "S/PDIF IN"

AUX12 = S/PDIF 1 (L) AUX13 = S/PDIF 2 (R)

(On the back of the device, these are optical connectors.

In ADAT mode, each bank (A & B) is 8 channels

In TOSLink mode (for Bank A only), Bank A will use only 2-channels (14-15)

and Bank B will continue to be 8-channel ADAT

Bank A's mode can be changed in the device's on board menu)

AUX14 = Optical A 1 (L) AUX15 = Optical A 2 (R) AUX16 = Optical A 3 (L) AUX17 = Optical A 4 (R) AUX18 = Optical A 5 (L) AUX19 = Optical A 6 (R) AUX20 = Optical A 7 (L) AUX21 = Optical A 8 (R)

AUX22 = Optical B 1 (L) AUX23 = Optical B 2 (R) AUX24 = Optical B 3 (L) AUX25 = Optical B 4 (R) AUX26 = Optical B 5 (L) AUX27 = Optical B 6 (R) AUX28 = Optical B 7 (L) AUX29 = Optical B 8 (R)

beatboxa commented 3 months ago

For what it's worth, here is my attempt to create a UCM configuration. This is not ideally how I would like to set up the card; but it is the default setup and how the device actually behaves (and should behave) out of the box. I personally want to remap output channels to support surround sound mapping; but I'll attempt to do that after I get this working.

`LibraryConfig.pcm.Config {

#bindings
#outputs
pcm.motu828_stereo_out {
    @args [ CARD CHN0 CHN1 ]
    @args {
        CARD.type string
        CHN0.type integer
        CHN1.type integer
    }
    type dshare
    ipc_key 828012
    slave {
        pcm {
            type hw
            card $CARD
            device 0
        }
        channels 32
    }
    bindings.0 $CHN0
    bindings.1 $CHN1
}

pcm.motu828_71_out {
    @args [ CARD CHN0 CHN1 CHN2 CHN3 CHN4 CHN5 CHN6 CHN7 ]
    @args {
        CARD.type string
        CHN0.type integer
        CHN1.type integer
        CHN2.type integer
        CHN3.type integer
        CHN4.type integer
        CHN5.type integer
        CHN6.type integer
        CHN7.type integer
    }
    type dshare
    ipc_key 828018
    slave {
        pcm {
            type hw
            card $CARD
            device 0
        }
        channels 32
    }
    bindings.0 $CHN0
    bindings.1 $CHN1
    bindings.2 $CHN2
    bindings.3 $CHN3
    bindings.4 $CHN4
    bindings.5 $CHN5
    bindings.6 $CHN6
    bindings.7 $CHN7
}

#inputs
pcm.motu828_mono_in {
    @args [ CARD CHN0 ]
    @args {
        CARD.type string
        CHN0.type integer
    }
    type dsnoop
    ipc_key 828001
    slave {
        pcm {
            type hw
            card $CARD
            device 0
        }
        channels 30
    }
    bindings.0 $CHN0
}

pcm.motu828_stereo_in {
    @args [ CARD CHN0 CHN1 ]
    @args {
        CARD.type string
        CHN0.type integer
        CHN1.type integer
    }
    type dsnoop
    ipc_key 828112
    slave {
        pcm {
            type hw
            card $CARD
            device 0
        }
        channels 30
    }
    bindings.0 $CHN0
    bindings.1 $CHN1
}

pcm.motu828_71_in {
    @args [ CARD CHN0 CHN1 CHN2 CHN3 CHN4 CHN5 CHN6 CHN7 ]
    @args {
        CARD.type string
        CHN0.type integer
        CHN1.type integer
        CHN2.type integer
        CHN3.type integer
        CHN4.type integer
        CHN5.type integer
        CHN6.type integer
        CHN7.type integer
    }
    type dsnoop
    ipc_key 828118
    slave {
        pcm {
            type hw
            card $CARD
            device 0
        }
        channels 30
    }
    bindings.0 $CHN0
    bindings.1 $CHN1
    bindings.2 $CHN2
    bindings.3 $CHN3
    bindings.4 $CHN4
    bindings.5 $CHN5
    bindings.6 $CHN6
    bindings.7 $CHN7
}

#Virtual device outputs
pcm.motu828_lineout12 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",0,1" ]
    }
}

pcm.motu828_lineout34 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",2,3" ]
    }
}

pcm.motu828_lineout56 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",4,5" ]
    }
}

pcm.motu828_lineout78 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",6,7" ]
    }
}

pcm.motu828_lineout910 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",8,9" ]
    }
}

pcm.motu828_headphones1 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",10,11" ]
    }
}

pcm.motu828_headphones2 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",12,13" ]
    }
}

pcm.motu828_spdifout1 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_out:" $CARD ",14,15" ]
    }
}

pcm.motu828_spdifout2 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_71_out:" $CARD ",16,17,18,19,20,21,22,23" ]
    }
}

pcm.motu828_spdifout3 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_71_out:" $CARD ",24,25,26,27,28,29,30,31" ]
    }
}

#Virtual Device Inputs:
pcm.motu828_mic1 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_mono_in:" $CARD ",0" ]
    }
}

pcm.motu828_mic2 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_mono_in:" $CARD ",1" ]
    }
}

pcm.motu828_linein34 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",2,3" ]
    }
}

pcm.motu828_linein56 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",4,5" ]
    }
}

pcm.motu828_linein78 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",6,7" ]
    }
}

pcm.motu828_linein910 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",8,9" ]
    }
}

pcm.motu828_loopback {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",10,11" ]
    }
}

pcm.motu828_spdifin1 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_stereo_in:" $CARD ",12,13" ]
    }
}

pcm.motu828_spdifin2 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_71_in:" $CARD ",14,15,16,17,18,19,20,21" ]
    }
}

pcm.motu828_spdifin3 {
    @args [ CARD ]
    @args.CARD.type string
    type empty
    slave.pcm {
        @func concat
        strings [ "motu828_71_in:" $CARD ",22,23,24,25,26,27,28,29" ]
    }
}

}

Physical Device Outputs:

SectionDevice."Line_Out_1-2" { Comment "Main Out A (1-2)" Value { PlaybackPriority 200 PlaybackChannels 2 PlaybackPCM "motu828_lineout12:${CardId}" PlaybackMixerElem "Main Out A" } }

SectionDevice."Line_Out_3-4" { Comment "Main Out B / Line Out (3-4)" Value { PlaybackPriority 190 PlaybackChannels 2 PlaybackPCM "motu828_lineout34:${CardId}" PlaybackMixerElem "Main Out B / Line Out (3-4)" } }

SectionDevice."Line_Out_5-6" { Comment "Line Out (5-6)" Value { PlaybackPriority 180 PlaybackChannels 2 PlaybackPCM "motu828_lineout56:${CardId}" PlaybackMixerElem "Line Out (5-6)" } }

SectionDevice."Line_Out_7-8" { Comment "Line Out (7-8)" Value { PlaybackPriority 170 PlaybackChannels 2 PlaybackPCM "motu828_lineout78:${CardId}" PlaybackMixerElem "Line Out (7-8)" } }

SectionDevice."Line_Out_9-10" { Comment "Line Out (9-10)" Value { PlaybackPriority 160 PlaybackChannels 2 PlaybackPCM "motu828_lineout910:${CardId}" PlaybackMixerElem "Line Out (9-10)" } }

SectionDevice."Headphones_Out_1" { Comment "Headphones 1" Value { PlaybackPriority 199 PlaybackChannels 2 PlaybackPCM "motu828_headphones1:${CardId}" PlaybackMixerElem "Headphones 1" } }

SectionDevice."Headphones_Out_2" { Comment "Headphones 2" Value { PlaybackPriority 198 PlaybackChannels 2 PlaybackPCM "motu828_headphones2:${CardId}" PlaybackMixerElem "Headphones 2" } }

SectionDevice."SPDIF_Out_1" { Comment "S/PDIF Out (RCA)" Value { PlaybackPriority 150 PlaybackChannels 2 PlaybackPCM "motu828_spdifout1:${CardId}" PlaybackMixerElem "S/PDIF" } }

SectionDevice."SPDIF_Out_2" { Comment "Optical A Out" Value { PlaybackPriority 140 PlaybackChannels 8 PlaybackPCM "motu828_spdifout2:${CardId}" PlaybackMixerElem "Optical A" } }

SectionDevice."SPDIF_Out_3" { Comment "Optical B Out" Value { PlaybackPriority 130 PlaybackChannels 8 PlaybackPCM "motu828_spdifout3:${CardId}" PlaybackMixerElem "Optical B" }

}

Physical Device Inputs

SectionDevice."Mic_In_1" { Comment "Mic / Line / Instrument In 1" Value { CapturePriority 200 CaptureChannels 1 CapturePCM "motu828_mic1:${CardId}" CaptureMixerElem "Mic / Line In 1" } }

SectionDevice."Mic_In_2" { Comment "Mic / Line / Instrument In 2" Value { CapturePriority 190 CaptureChannels 1 CapturePCM "motu828_mic2:${CardId}" CaptureMixerElem "Mic / Line In 2" } }

SectionDevice."Line_In_3-4" { Comment "Line In 3-4" Value { CapturePriority 180 CaptureChannels 2 CapturePCM "motu828_linein34:${CardId}" CaptureMixerElem "Line In 3-4" } }

SectionDevice."Line_In_5-6" { Comment "Line In 5-6" Value { CapturePriority 170 CaptureChannels 2 CapturePCM "motu828_linein56:${CardId}" CaptureMixerElem "Line In 5-6" } }

SectionDevice."Line_In_7-8" { Comment "Line In 7-8" Value { CapturePriority 160 CaptureChannels 2 CapturePCM "motu828_linein78:${CardId}" CaptureMixerElem "Line In 7-8" } }

SectionDevice."Line_In_9-10" { Comment "Line In 9-10" Value { CapturePriority 150 CaptureChannels 2 CapturePCM "motu828_linein910:${CardId}" CaptureMixerElem "Line In 9-10" } }

SectionDevice."Capture Music" { Comment "Loopback" Value { CapturePriority 199 CaptureChannels 2 CapturePCM "motu828_loopback:${CardId}" CaptureMixerElem "Loopback" } }

SectionDevice."SPDIF_In_1" { Comment "S/PDIF In (RCA)" Value { CapturePriority 140 CaptureChannels 2 CapturePCM "motu828_spdifin1:${CardId}" CaptureMixerElem "S/PDIF" } }

SectionDevice."SPDIF_In_2" { Comment "Optical A In" Value { CapturePriority 120 CaptureChannels 8 CapturePCM "motu828_spdifin2:${CardId}" CaptureMixerElem "Optical A" } }

SectionDevice."SPDIF_In_3" { Comment "Optical B In (ADAT)" Value { CapturePriority 110 CaptureChannels 8 CapturePCM "motu828_spdifin3:${CardId}" CaptureMixerElem "Optical B" } }`

To summarize what I did (at least this is my understanding):

The bottom sections (SectionDevice) define all physical ports
The middle sections (pcm type empty) define virtual devices and maps virtual channels to physical ports. Most are paired in stereo. There are two exceptions: the front input microphones are defined as mono; and the ADAT (optical) are defined as 8-channels
The top sections (pcm types dshare or dsnoop) actually performs the mappings or profiles via parameters from the previous section. For output, I've only defined stereo and 7.1; and for input, I've defined mono, stereo, and 7.1

This has gotten me the furthest; but it seems to fail and then fallback to 2 channel duplex in the pro audio profile. I'm guessing this could be due to xrun or timing? Maybe I have to define a buffer or period? Or maybe I'm missing something else?

Here is the output of the command "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 SPDIF_In_3: _ucm0001.motu828_spdifin3:D828 Got PlaybackCTL for device SPDIF_In_3: _ucm0001.hw:D828 Got CaptureCTL for device SPDIF_In_3: _ucm0001.hw:D828 Got CaptureMixerElem for device SPDIF_In_3: Optical B Got CapturePriority for device SPDIF_In_3: 110 Got CaptureChannels for device SPDIF_In_3: 8 No _conflictingdevs for device SPDIF_In_3 No _supporteddevs for device SPDIF_In_3 Got CapturePCM for device SPDIF_In_2: _ucm0001.motu828_spdifin2:D828 Got PlaybackCTL for device SPDIF_In_2: _ucm0001.hw:D828 Got CaptureCTL for device SPDIF_In_2: _ucm0001.hw:D828 Got CaptureMixerElem for device SPDIF_In_2: Optical A Got CapturePriority for device SPDIF_In_2: 120 Got CaptureChannels for device SPDIF_In_2: 8 No _conflictingdevs for device SPDIF_In_2 No _supporteddevs for device SPDIF_In_2 Got CapturePCM for device SPDIF_In_1: _ucm0001.motu828_spdifin1:D828 Got PlaybackCTL for device SPDIF_In_1: _ucm0001.hw:D828 Got CaptureCTL for device SPDIF_In_1: _ucm0001.hw:D828 Got CaptureMixerElem for device SPDIF_In_1: S/PDIF Got CapturePriority for device SPDIF_In_1: 140 Got CaptureChannels for device SPDIF_In_1: 2 No _conflictingdevs for device SPDIF_In_1 No _supporteddevs for device SPDIF_In_1 Got CapturePCM for device Capture Music: _ucm0001.motu828_loopback:D828 Got PlaybackCTL for device Capture Music: _ucm0001.hw:D828 Got CaptureCTL for device Capture Music: _ucm0001.hw:D828 Got CaptureMixerElem for device Capture Music: Loopback Got CapturePriority for device Capture Music: 199 Got CaptureChannels for device Capture Music: 2 No _conflictingdevs for device Capture Music No _supporteddevs for device Capture Music Got CapturePCM for device Line_In_9-10: _ucm0001.motu828_linein910:D828 Got PlaybackCTL for device Line_In_9-10: _ucm0001.hw:D828 Got CaptureCTL for device Line_In_9-10: _ucm0001.hw:D828 Got CaptureMixerElem for device Line_In_9-10: Line In 9-10 Got CapturePriority for device Line_In_9-10: 150 Got CaptureChannels for device Line_In_9-10: 2 No _conflictingdevs for device Line_In_9-10 No _supporteddevs for device Line_In_9-10 Got CapturePCM for device Line_In_7-8: _ucm0001.motu828_linein78:D828 Got PlaybackCTL for device Line_In_7-8: _ucm0001.hw:D828 Got CaptureCTL for device Line_In_7-8: _ucm0001.hw:D828 Got CaptureMixerElem for device Line_In_7-8: Line In 7-8 Got CapturePriority for device Line_In_7-8: 160 Got CaptureChannels for device Line_In_7-8: 2 No _conflictingdevs for device Line_In_7-8 No _supporteddevs for device Line_In_7-8 Got CapturePCM for device Line_In_5-6: _ucm0001.motu828_linein56:D828 Got PlaybackCTL for device Line_In_5-6: _ucm0001.hw:D828 Got CaptureCTL for device Line_In_5-6: _ucm0001.hw:D828 Got CaptureMixerElem for device Line_In_5-6: Line In 5-6 Got CapturePriority for device Line_In_5-6: 170 Got CaptureChannels for device Line_In_5-6: 2 No _conflictingdevs for device Line_In_5-6 No _supporteddevs for device Line_In_5-6 Got CapturePCM for device Line_In_3-4: _ucm0001.motu828_linein34:D828 Got PlaybackCTL for device Line_In_3-4: _ucm0001.hw:D828 Got CaptureCTL for device Line_In_3-4: _ucm0001.hw:D828 Got CaptureMixerElem for device Line_In_3-4: Line In 3-4 Got CapturePriority for device Line_In_3-4: 180 Got CaptureChannels for device Line_In_3-4: 2 No _conflictingdevs for device Line_In_3-4 No _supporteddevs for device Line_In_3-4 Got CapturePCM for device Mic_In_2: _ucm0001.motu828_mic2:D828 Got PlaybackCTL for device Mic_In_2: _ucm0001.hw:D828 Got CaptureCTL for device Mic_In_2: _ucm0001.hw:D828 Got CaptureMixerElem for device Mic_In_2: Mic / Line In 2 Got CapturePriority for device Mic_In_2: 190 Got CaptureChannels for device Mic_In_2: 1 No _conflictingdevs for device Mic_In_2 No _supporteddevs for device Mic_In_2 Got CapturePCM for device Mic_In_1: _ucm0001.motu828_mic1:D828 Got PlaybackCTL for device Mic_In_1: _ucm0001.hw:D828 Got CaptureCTL for device Mic_In_1: _ucm0001.hw:D828 Got CaptureMixerElem for device Mic_In_1: Mic / Line In 1 Got CapturePriority for device Mic_In_1: 200 Got CaptureChannels for device Mic_In_1: 1 No _conflictingdevs for device Mic_In_1 No _supporteddevs for device Mic_In_1 Got PlaybackPCM for device SPDIF_Out_3: _ucm0001.motu828_spdifout3:D828 Got PlaybackCTL for device SPDIF_Out_3: _ucm0001.hw:D828 Got PlaybackMixerElem for device SPDIF_Out_3: Optical B Got PlaybackPriority for device SPDIF_Out_3: 130 Got PlaybackChannels for device SPDIF_Out_3: 8 Got CaptureCTL for device SPDIF_Out_3: _ucm0001.hw:D828 No _conflictingdevs for device SPDIF_Out_3 No _supporteddevs for device SPDIF_Out_3 Got PlaybackPCM for device SPDIF_Out_2: _ucm0001.motu828_spdifout2:D828 Got PlaybackCTL for device SPDIF_Out_2: _ucm0001.hw:D828 Got PlaybackMixerElem for device SPDIF_Out_2: Optical A Got PlaybackPriority for device SPDIF_Out_2: 140 Got PlaybackChannels for device SPDIF_Out_2: 8 Got CaptureCTL for device SPDIF_Out_2: _ucm0001.hw:D828 No _conflictingdevs for device SPDIF_Out_2 No _supporteddevs for device SPDIF_Out_2 Got PlaybackPCM for device SPDIF_Out_1: _ucm0001.motu828_spdifout1:D828 Got PlaybackCTL for device SPDIF_Out_1: _ucm0001.hw:D828 Got PlaybackMixerElem for device SPDIF_Out_1: S/PDIF Got PlaybackPriority for device SPDIF_Out_1: 150 Got PlaybackChannels for device SPDIF_Out_1: 2 Got CaptureCTL for device SPDIF_Out_1: _ucm0001.hw:D828 No _conflictingdevs for device SPDIF_Out_1 No _supporteddevs for device SPDIF_Out_1 Got PlaybackPCM for device Headphones_Out_2: _ucm0001.motu828_headphones2:D828 Got PlaybackCTL for device Headphones_Out_2: _ucm0001.hw:D828 Got PlaybackMixerElem for device Headphones_Out_2: Headphones 2 Got PlaybackPriority for device Headphones_Out_2: 198 Got PlaybackChannels for device Headphones_Out_2: 2 Got CaptureCTL for device Headphones_Out_2: _ucm0001.hw:D828 No _conflictingdevs for device Headphones_Out_2 No _supporteddevs for device Headphones_Out_2 Got PlaybackPCM for device Headphones_Out_1: _ucm0001.motu828_headphones1:D828 Got PlaybackCTL for device Headphones_Out_1: _ucm0001.hw:D828 Got PlaybackMixerElem for device Headphones_Out_1: Headphones 1 Got PlaybackPriority for device Headphones_Out_1: 199 Got PlaybackChannels for device Headphones_Out_1: 2 Got CaptureCTL for device Headphones_Out_1: _ucm0001.hw:D828 No _conflictingdevs for device Headphones_Out_1 No _supporteddevs for device Headphones_Out_1 Got PlaybackPCM for device Line_Out_9-10: _ucm0001.motu828_lineout910:D828 Got PlaybackCTL for device Line_Out_9-10: _ucm0001.hw:D828 Got PlaybackMixerElem for device Line_Out_9-10: Line Out (9-10) Got PlaybackPriority for device Line_Out_9-10: 160 Got PlaybackChannels for device Line_Out_9-10: 2 Got CaptureCTL for device Line_Out_9-10: _ucm0001.hw:D828 No _conflictingdevs for device Line_Out_9-10 No _supporteddevs for device Line_Out_9-10 Got PlaybackPCM for device Line_Out_7-8: _ucm0001.motu828_lineout78:D828 Got PlaybackCTL for device Line_Out_7-8: _ucm0001.hw:D828 Got PlaybackMixerElem for device Line_Out_7-8: Line Out (7-8) Got PlaybackPriority for device Line_Out_7-8: 170 Got PlaybackChannels for device Line_Out_7-8: 2 Got CaptureCTL for device Line_Out_7-8: _ucm0001.hw:D828 No _conflictingdevs for device Line_Out_7-8 No _supporteddevs for device Line_Out_7-8 Got PlaybackPCM for device Line_Out_5-6: _ucm0001.motu828_lineout56:D828 Got PlaybackCTL for device Line_Out_5-6: _ucm0001.hw:D828 Got PlaybackMixerElem for device Line_Out_5-6: Line Out (5-6) Got PlaybackPriority for device Line_Out_5-6: 180 Got PlaybackChannels for device Line_Out_5-6: 2 Got CaptureCTL for device Line_Out_5-6: _ucm0001.hw:D828 No _conflictingdevs for device Line_Out_5-6 No _supporteddevs for device Line_Out_5-6 Got PlaybackPCM for device Line_Out_3-4: _ucm0001.motu828_lineout34:D828 Got PlaybackCTL for device Line_Out_3-4: _ucm0001.hw:D828 Got PlaybackMixerElem for device Line_Out_3-4: Main Out B / Line Out (3-4) Got PlaybackPriority for device Line_Out_3-4: 190 Got PlaybackChannels for device Line_Out_3-4: 2 Got CaptureCTL for device Line_Out_3-4: _ucm0001.hw:D828 No _conflictingdevs for device Line_Out_3-4 No _supporteddevs for device Line_Out_3-4 Got PlaybackPCM for device Line_Out_1-2: _ucm0001.motu828_lineout12:D828 Got PlaybackCTL for device Line_Out_1-2: _ucm0001.hw:D828 Got PlaybackMixerElem for device Line_Out_1-2: Main Out A Got PlaybackPriority for device Line_Out_1-2: 200 Got PlaybackChannels for device Line_Out_1-2: 2 Got CaptureCTL for device Line_Out_1-2: _ucm0001.hw:D828 No _conflictingdevs for device Line_Out_1-2 No _supporteddevs for device Line_Out_1-2 Found UCM profiles UCM mapping: HiFi: motu828_spdifin3:D828: source dev SPDIF_In_3 UCM mapping: HiFi: motu828_spdifin2:D828: source dev SPDIF_In_2 UCM mapping: HiFi: motu828_spdifin1:D828: source dev SPDIF_In_1 UCM mapping: HiFi: motu828_loopback:D828: source dev Capture Music UCM mapping: HiFi: motu828_linein910:D828: source dev Line_In_9-10 UCM mapping: HiFi: motu828_linein78:D828: source dev Line_In_7-8 UCM mapping: HiFi: motu828_linein56:D828: source dev Line_In_5-6 UCM mapping: HiFi: motu828_linein34:D828: source dev Line_In_3-4 UCM mapping: HiFi: motu828_mic2:D828: source dev Mic_In_2 UCM mapping: HiFi: motu828_mic1:D828: source dev Mic_In_1 UCM mapping: HiFi: motu828_spdifout3:D828: sink dev SPDIF_Out_3 UCM mapping: HiFi: motu828_spdifout2:D828: sink dev SPDIF_Out_2 UCM mapping: HiFi: motu828_spdifout1:D828: sink dev SPDIF_Out_1 UCM mapping: HiFi: motu828_headphones2:D828: sink dev Headphones_Out_2 UCM mapping: HiFi: motu828_headphones1:D828: sink dev Headphones_Out_1 UCM mapping: HiFi: motu828_lineout910:D828: sink dev Line_Out_9-10 UCM mapping: HiFi: motu828_lineout78:D828: sink dev Line_Out_7-8 UCM mapping: HiFi: motu828_lineout56:D828: sink dev Line_Out_5-6 UCM mapping: HiFi: motu828_lineout34:D828: sink dev Line_Out_3-4 UCM mapping: HiFi: motu828_lineout12:D828: sink dev Line_Out_1-2 Profile HiFi (28x32 Default), input=null, output=null priority=8000, supported=yes n_input_mappings=10, n_output_mappings=10 Input HiFi: motu828_spdifin3:D828: source Input HiFi: motu828_spdifin2:D828: source Input HiFi: motu828_spdifin1:D828: source Input HiFi: motu828_loopback:D828: source Input HiFi: motu828_linein910:D828: source Input HiFi: motu828_linein78:D828: source Input HiFi: motu828_linein56:D828: source Input HiFi: motu828_linein34:D828: source Input HiFi: motu828_mic2:D828: source Input HiFi: motu828_mic1:D828: source Output HiFi: motu828_spdifout3:D828: sink Output HiFi: motu828_spdifout2:D828: sink Output HiFi: motu828_spdifout1:D828: sink Output HiFi: motu828_headphones2:D828: sink Output HiFi: motu828_headphones1:D828: sink Output HiFi: motu828_lineout910:D828: sink Output HiFi: motu828_lineout78:D828: sink Output HiFi: motu828_lineout56:D828: sink Output HiFi: motu828_lineout34:D828: sink Output HiFi: motu828_lineout12:D828: sink Set ucm verb to HiFi Trying _ucm0001.motu828_spdifout3:D828 with SND_PCM_NO_AUTO_FORMAT ... ALSA device open '_ucm0001.motu828_spdifout3:D828' playback: 0x5af1274e80c0 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_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 bit Big Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Big Endian) failed: Invalid argument Maximum hw buffer size is 375 ms Set buffer size first (to 4800 samples), period size second (to 1200 samples). Device motu828_71_out:D828,24,25,26,27,28,29,30,31 doesn't support sample format s16le, changed to s24le. Trying _ucm0001.motu828_spdifout2:D828 with SND_PCM_NO_AUTO_FORMAT ... ALSA device open '_ucm0001.motu828_spdifout2:D828' playback: 0x5af1274e7820 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_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 bit Big Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Big Endian) failed: Invalid argument Maximum hw buffer size is 375 ms Set buffer size first (to 4800 samples), period size second (to 1200 samples). Device motu828_71_out:D828,16,17,18,19,20,21,22,23 doesn't support sample format s16le, changed to s24le. Trying _ucm0001.motu828_spdifout1:D828 with SND_PCM_NO_AUTO_FORMAT ... open '/dev/snd/pcmC0D0p' failed (-16) unable to open slave Error opening PCM device _ucm0001.motu828_spdifout1:D828: Device or resource busy ALSA device close 0x5af1274e80c0 ALSA device close 0x5af1274e7820 Trying hw:0,0 with SND_PCM_NO_AUTO_FORMAT ... ALSA device open 'hw:0,0' playback: 0x5af1274e9750 snd_pcm_hw_params_set_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 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_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 bit Big Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Big Endian) failed: Invalid argument Maximum hw buffer size is 2000 ms Set buffer size first (to 65536 samples), period size second (to 1024 samples). Device hw:0,0 doesn't support 64 channels, changed to 32. Device hw:0,0 doesn't support sample format s32le, changed to s24le. ALSA device close 0x5af1274e9750 Trying hw:0,0 with SND_PCM_NO_AUTO_FORMAT ... ALSA device open 'hw:0,0' capture: 0x5af1274e8d40 snd_pcm_hw_params_set_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 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_format(Signed 32 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 32 bit Big Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Little Endian) failed: Invalid argument snd_pcm_hw_params_set_format(Signed 24 bit Big Endian) failed: Invalid argument Maximum hw buffer size is 2000 ms Set buffer size first (to 65536 samples), period size second (to 1024 samples). Device hw:0,0 doesn't support 64 channels, changed to 30. Device hw:0,0 doesn't support sample format s32le, changed to s24le. ALSA device close 0x5af1274e8d40 Found 0 jacks. activate profile: pro-audio (1) Device: Pro mapping 'Pro' (pro-output-0). Device: Pro mapping 'Pro' (pro-input-0). card 0: profiles:2 devices:2 ports:0 properties: (11) use-ucm = "true" verbose = "true" alsa.card = "0" alsa.card_name = "828" alsa.long_card_name = "MOTU 828 at usb-0000:26:00.0-2, super speed" alsa.driver_name = "snd_usb_audio" alsa.mixer_name = "USB Mixer" alsa.components = "USB07fd:000e" alsa.id = "D828" device.string = "0" device.description = "828"

Any help would be greatly appreciated.

perexg commented 3 months ago

It's better to use (extend for more channels) the SplitPCM / SplitPCMDevice macros in ucm2/common/pcm/split.conf and use those macros to describe devices. I would start with mono / stereo I/O at first and then add multichannel configuration. The mentioned macros can already override channel mapping (chmap). Create a PR, so we can discuss your changes directly.

beatboxa commented 3 months ago

I originally alternatively attempted to use the splitpcm macro as well, based on the Motu M6 configuration file; but it errored out almost immediately with a variable not found. I couldn't get to the bottom of what was different between my Motu 828 and the Motu M6 to cause this.

So I took this more manual approach and got further. FWIW, this latest manual attempt seems to hit this same issue described here: https://github.com/alsa-project/alsa-lib/issues/245

Regardless, I will read up on how to create a pull request and include both of my attempts as well there. Thanks.

alsa-project / alsa-ucm-conf

Motu 828 (28 x 32) support #415

(On the back of the device, these are labelled "MAIN OUT (A)" and are XLR connectors):

(On the back of the device, these are labelled "(B)" in the "LINE OUT" section and are balanced 1/4" TRS connectors):

(On the back of the device, these are labelled "LINE OUT" and are balanced 1/4" TRS connectors):

(On the front of the device, these are 1/4" TRS connectors):

(On the back of the device, this is a single RCA connector, labelled "S/PDIF OUT"):

(On the back of the device, these are optical connectors.

In ADAT mode, each bank (A & B) is 8 channels

In TOSLink mode (for Bank A only), Bank A will use only 2-channels (16-17)

and Bank B will continue to be 8-channel ADAT

Bank A's mode can be changed in the device's on board menu)

(On the front of the device, these are Combo (XLR + 1/4" TRS) connectors

(On the back of the device, these are paired with the "MIC INSERT" balanced 1/4" TRS connectors):

(On the back of the device, these are labelled "LINE IN" and are balanced 1/4" TRS connectors:

(This is an internal loopback, with no physical inputs)

(On the back of the device, this is a single RCA connector, labelled "S/PDIF IN"

(On the back of the device, these are optical connectors.

In ADAT mode, each bank (A & B) is 8 channels

In TOSLink mode (for Bank A only), Bank A will use only 2-channels (14-15)

and Bank B will continue to be 8-channel ADAT

Bank A's mode can be changed in the device's on board menu)

Physical Device Outputs:

Physical Device Inputs