0d8c:0102 [Asus P8Z77-M] USB-Audio FCA610, playback Pulseaudio/ALSA fails to detect card

[Benjamin Tegge]

Signpost update & solution:

# [pulseaudio-discuss] Need help with Behringer Firepower FCA610 profile

http://lists.freedesktop.org/archives/pulseaudio-discuss/2015-June/024115.html

# Further reading

http://www.freedesktop.org/wiki/Software/PulseAudio/Backends/ALSA/Profiles/

## [pulseaudio-discuss] 'Failed to find a working profile' for firewire sound devices

http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-January/019748.html

> SUBSYSTEMS=="firewire", ENV{PULSE_PROFILE_SET}="multichannel.conf"

http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-January/019730.html

> To aid for applications, one can add custom per-card mapping in alsa-lib
> - e g, look at /usr/share/alsa/cards/ICE1712.conf where you can open the
> device "front:<card>" with two channels and it automatically upscales to
> 10 or 12 channels.

## Pulseaudio - Fix popping on initialization

http://stackoverflow.com/q/12732359/dac-pops-on-song-start-stop-in-raspbian

-------

Update:

The issue still exists and is _not_ releated to BIOS or UEFI firmware, as I have tried to get the device working on 3 different hosts.

Testing the device with aplay works fine for a stereo file:

aplay -D plughw:CARD=FCA610,DEV=0 test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
^CAborted by signal Interrupt...
aplay: pcm_write:1939: write error: Interrupted system call

PulseAudio is still not able to use/configure the device (see comment #20 for error message) and alsamixer still shows only the "Clock Selector" control.

Release tested: trusty
Kernels tested: the latest mainline as of today (3.14.0-999-generic_3.14.0-999.201404130205) and the latest trusty kernel as of today (3.13.0-24-generic)

---

I am trying to get the new Behringer FCA610 USB/Firewire audio interface to work via USB connection (issue might also affect the bigger FCA1616 model). I haven't tried Firewire since my computers don't have have Firewire inputs anymore. The device is detected as "Device: FCA610 Chip: USB Mixer" in alsamixer but only shows a control named "Clock Selector" with the following options: SPDIF Input, USB-Bus (SOF), Device Internal Clock. Attached files are from my workstation running 12.10, but I have also tried 13.04 and saucy.

What I expected to happen:
At least some inputs and (stereo) outputs should show up in alsamixer. Ideally 4 stereo outputs (including pulseaudio profiles for stereo up to 7.1), 2 mic/instrument inputs as well as toslink in and out were expected to be working.

What happened:
Only a control named "Clock Selector" is visible in alsamixer (View: F5: All), nothing in pavucontrol or sound settings.

---
cat /proc/asound/FCA610/usbmixer
USB Mixer: usb_id=0x13970003, ctrlif=0, ctlerr=0
Card: BEHRINGER FCA610 at usb-0000:00:14.0-2, high speed
  Unit: 211
    Control: name="Clock Selector", index=0
    Info: id=211, control=1, cmask=0x0, channels=1, type="U8"
    Volume: min=1, max=3, dBmin=0, dBmax=0

cat /proc/asound/FCA610/stream0
BEHRINGER FCA610 at usb-0000:00:14.0-2, high speed : USB Audio

Playback:
  Status: Stop
  Interface 2
    Altset 1
    Format: S32_LE
    Channels: 10
    Endpoint: 2 OUT (ASYNC)
    Rates: 44100, 48000, 88200, 96000
    Data packet interval: 125 us

Capture:
  Status: Stop
  Interface 1
    Altset 1
    Format: S32_LE
    Channels: 6
    Endpoint: 1 IN (ASYNC)
    Rates: 44100, 48000, 88200, 96000
    Data packet interval: 125 us

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: pulseaudio 1:2.1-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.5.0-34.55-generic 3.5.7.13
Uname: Linux 3.5.0-34-generic x86_64
ApportVersion: 2.6.1-0ubuntu11
Architecture: amd64
Date: Sun Jul 7 03:42:14 2013
InstallationDate: Installed on 2012-10-20 (259 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
Symptom: audio
Symptom_Card: USB-Audio - FCA610
Title: [USB-Audio - FCA610, playback] Pulseaudio fails to detect card
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/09/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2003
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8Z77-M
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2003:bd05/09/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-M:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
modified.conffile..etc.pulse.daemon.conf: [modified]
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.daemon.conf: 2012-11-14T23:08:28
mtime.conffile..etc.pulse.default.pa: 2012-11-14T23:06:17
---
ApportVersion: 2.6.1-0ubuntu11
Architecture: amd64
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
DistroRelease: Ubuntu 12.10
HibernationDevice: RESUME=UUID=0893f9f1-1bd7-4f18-8116-76400bb910a4
InstallationDate: Installed on 2012-10-20 (259 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
IwConfig:
 vboxnet0 no wireless extensions.

 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: System manufacturer System Product Name
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-34-generic root=UUID=cb53da38-db99-4d80-8f10-8349ff24bc3a ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.5.0-34.55-generic 3.5.7.13
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-34-generic N/A
 linux-backports-modules-3.5.0-34-generic N/A
 linux-firmware 1.95.1
RfKill:
 75: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
Tags: quantal running-unity
Uname: Linux 3.5.0-34-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
dmi.bios.date: 05/09/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2003
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8Z77-M
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2003:bd05/09/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-M:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1198577

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Benjamin Tegge (livewirebt)]

apport information

[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Benjamin Tegge (livewirebt)]

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[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.10 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy/

[penalvch (penalvch)]

Benjamin Tegge, as per http://www.asus.com/Motherboards/P8Z77M/#support an update is available for your BIOS (2105). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Brad Figg (brad-figg)]

This change was made by a bot.

[Benjamin Tegge (livewirebt)]

The choppy audio accross all channels seems to have been caused by a bad USB cable. Another cable works and I can hear proper stereo by using the rear outputs 1/L+2/R or the headphone monitor output.

The only thing that seems to be missing is a proper configuration for the card from ALSA (/usr/share/alsa/ucm/ or /usr/share/alsa/cards/, or an special handling in /usr/share/alsa/cards/USB-Audio.conf) so that PulseAudio can pick it up. The following is an excerpt of what I get when running `pulseaudio -k && pulseaudio -v`:

I: [pulseaudio] (alsa-lib)utils.c: could not open configuration file /usr/share/alsa/ucm/FCA610/FCA610.conf
I: [pulseaudio] (alsa-lib)parser.c: error: could not parse configuration for card FCA610
I: [pulseaudio] (alsa-lib)main.c: error: failed to import FCA610 use case configuration -2
I: [pulseaudio] alsa-ucm.c: UCM not available for card FCA610
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:front:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:front:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround40:1: Invalid argument
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround41:1: Invalid argument
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround50:1: Invalid argument
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround51:1: Invalid argument
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] (alsa-lib)pcm_params.c: Slave PCM not usable
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround71:1: Invalid argument
I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:iec958:1: Invalid argument
I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM a52:1
I: [pulseaudio] alsa-util.c: Error opening PCM device a52:1: No such file or directory
I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM a52:1
I: [pulseaudio] alsa-util.c: Error opening PCM device a52:1: No such file or directory
I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dca:1
I: [pulseaudio] alsa-util.c: Error opening PCM device dca:1: No such file or directory
I: [pulseaudio] (alsa-lib)confmisc.c: Unable to fi...

[Joseph Salisbury (jsalisbury)]

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

  With the recent release of this Ubuntu release, would like to confirm if this bug is still present. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging.

 Thank you for your help, we really do appreciate it.

[Benjamin Tegge (livewirebt)]

Created attachment 102196
complete output of pulseaudio -k; pulseaudio -vvvvv

I'm trying to get a Behringer FCA610 (connected via USB) to work with PulseAudio on Fedora 20 Heisenbug running with kernel 3.14 (and also Ubuntu 14.04 with Kernel 3.14). As far as I understand the device works fine with ALSA, but PulseAudio fails to configure the device properly.

The device itself seems to be detected fine according to dmesg:

[95060.032220] usb 1-1.2.1.4.3: SerialNumber: 000761DFC3E8
[95060.042366] input: Logitech Logitech BT Mini-Receiver as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1.4/1-1.2.1.4.3/1-1.2.1.4.3:1.0/0003:046D:C714.0019/input/input29
[95060.043225] logitech 0003:046D:C714.0019: input,hiddev0,hidraw5: USB HID v1.11 Mouse [Logitech Logitech BT Mini-Receiver] on usb-0000:00:1a.0-1.2.1.4.3/input0
[95116.054502] usb 3-1: new high-speed USB device number 2 using xhci_hcd
[95116.222000] usb 3-1: New USB device found, idVendor=1397, idProduct=0003
[95116.222008] usb 3-1: New USB device strings: Mfr=28, Product=29, SerialNumber=30
[95116.222012] usb 3-1: Product: FCA610
[95116.222015] usb 3-1: Manufacturer: BEHRINGER
[95116.222017] usb 3-1: SerialNumber: 0x156400e2fa
[95117.243436] usbcore: registered new interface driver snd-usb-audio

Playback of multichannel WAV files with aplay also works:

$ aplay -D plughw:CARD=FCA610,DEV=0 -c 10 Musik/test-6ch.wav
Playing WAVE 'Musik/test-6ch.wav' : Signed 16 bit Little Endian, Rate
44100 Hz, Channels 6
^CAborted by signal Interrupt..

These are the last few lines of `pulseaudio -vvvvv`

E: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
E: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="1" name="usb-BEHRINGER_FCA610_0x156400e2fa-00-FCA610" card_name="alsa_card.usb-BEHRINGER_FCA610_0x156400e2fa-00-FCA610" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1""): initialization failed.
I: [pulseaudio] module-udev-detect.c: Card /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.0/sound/card1 (alsa_card.usb-BEHRINGER_FCA610_0x156400e2fa-00-FCA610) failed to load module.
D: [pulseaudio] module-udev-detect.c: /dev/snd/controlC1 is accessible: yes
D: [pulseaudio] module-udev-detect.c: /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.0/sound/card1 is busy: no
W: [pulseaudio] module-udev-detect.c: Tried to configure /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.0/sound/card1 (alsa_card.usb-BEHRINGER_FCA610_0x156400e2fa-00-FCA610) more often than 5 times in 10s
D: [alsa-sink-ALC269VC Analog] alsa-sink.c: Cutting sleep time for the initial iterations by half.
I: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.pci-0000_00_1b.0.analog-stereo idle for too long, suspending ...
D: [pulseaudio] source.c: Suspend cause of source alsa_input.pci-0000_00_1b.0.analog-stereo is 0x0004, suspending
I: [alsa-source-ALC269VC Analog] alsa-source.c: Device suspended...
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
I: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_1b.0.analog-stereo idle for too long, suspending...

[Raymond (superquad-vortex2)]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1198577

seem support 10 channels playback and 6 channels capture

post output of

speaker-test -c2 -d -t wav -Dplughw:1

[Raymond (superquad-vortex2)]

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer/profile-sets/default.conf?id=7bb8442c111d5e1fba20eb101eb854edd5392627

6 channels capture can be added similar to 4 channels capture

[Alexander E. Patrakov (patrakov-gmail)]

Thanks for the verbose log. Unfortunately, it still does not contain all the information that is needed to debug this. Your message indicates that aplay can produce sound. Could you please paste the output of the following command?

aplay -vv -D plughw:CARD=FCA610,DEV=0 Musik/test-6ch.wav

If that fails:

aplay -vv -D plughw:CARD=FCA610,DEV=0 -c 10 Musik/test-6ch.wav

Also, there was a very similar discussion in January this year. Please read it, maybe it contains some ideas applicable to your case:

http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-January/019685.html

[Raymond (superquad-vortex2)]

http://www.behringer.com/EN/Products/FCA610.aspx

Streams 6 inputs / 10 outputs plus 1x MIDI I/O with ultra-low latency to your computer, supporting Mac* OS X* and Windows XP* or higher
Ultra-flexible connectivity via analog and S/PDIF I/O ports (coaxial and optical)

[Benjamin Tegge (livewirebt)]

Wow, thank you very much Alexander. I followed David's suggestion for a workaround (http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-January/019748.html) to create the multichannel.conf profile and added the following to /lib/udev/rules.d/90-pulseaudio.rules:

# Behringer FCA610
ATTRS{idVendor}=="1397", ATTRS{idProduct}=="0003", ENV{PULSE_PROFILE_SET}="multichannel.conf"

I can use the device for the first time! :) I haven't read the entire thread yet, but it's very late and I need to get some sleep. Getting 6ch/5.1 playback functionality (and probably stereo input) is what I wanted from PulseAudio. (If really want to make use of all channels I'd look into JACK.) I will come back once I looked deeper into this.

[Raymond (superquad-vortex2)]

you need jackd for stereo capture since pulseaudio downmix 6 channels capture to stereo

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[David Henningsson (diwic)]

Hi, I recently committed a multichannel patch to Git head that I hope should fix this issue. Please test it, and if it does not work, feel free to reopen this bug. Thanks!

commit 48edd0a00f455df075efcf1986103e5f507c816f
Author: David Henningsson <email address hidden>
Date: Fri Jul 25 15:16:41 2014 +0200

    alsa: Add a multichannel fallback mapping

[Benjamin Tegge (livewirebt)]

Hello David, would it be possible to provide the patch in the PulseAudio testing PPA (https://launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/pulse-testing)?

[Benjamin Tegge (livewirebt)]

Created attachment 114128
Pulseaudio 6.0 -vvvvv output on Ubuntu 15.04

Sorry for replying so late. I noticed that 6.0 was uploaded to Ubuntu 15.04 recently. On my clean testing system 6 inputs are now available in sound settings and pavucontrol, but outputs are still not discovered.

[David Henningsson (diwic)]

I think I see what the bug is in the latest log - the "multichannel" mapping seems to be shared between input and output mappings:

 1) Detect that output supports only 10 channels
 2) Change mapping "multichannel" to 10 channels
 3) Detect that input supports only 6 channels
 4) Change mapping "multichannel" to 6 channels
 5) Try to open output on mapping "multichannel" with 6 channels, and fail.

[Raymond (superquad-vortex2)]

this mean you need two profiles, one for output and one for input in

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/profile-sets/default.conf

+[Mapping multichannel-output]
+device-strings = hw:%f
+channel-map = left,right,rear-left,rear-right
+exact-channels = false
+fallback = yes
+priority = 1
+direction = output

+[Mapping multichannel-input]
+device-strings = hw:%f
+channel-map = left,right,rear-left,rear-right
+exact-channels = false
+fallback = yes
+priority = 1
+direction = input

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/alsa-mixer.c?id=48edd0a00f455df075efcf1986103e5f507c816f

static const struct description_map well_known_descriptions[] = {
         { "analog-mono", N_("Analog Mono") },
         { "analog-stereo", N_("Analog Stereo") },
- { "multichannel", N_("Multichannel") },
+ { "multichannel-output", N_("Multichannel Output") },
+ { "multichannel-input", N_("Multichannel Input") },
         { "analog-surround-21", N_("Analog Surround 2.1") },
         { "analog-surround-30", N_("Analog Surround 3.0") },
         { "analog-surround-31", N_("Analog Surround 3.1") },

[David Henningsson (diwic)]

Hi,

I've posted a patch set here: http://lists.freedesktop.org/archives/pulseaudio-discuss/2015-March/023561.html

The second of the three is a patch as suggested by Raymond and should fix this issue, but the third makes sense to test in combination with the second.

If you have time, please test and let me know if it fixes the issue. Thanks!