[pulseaudio-discuss] Terratec Aureon surround40 missing?

[Wille P. Salminen]

I'd need help to configure Terratec Aureon 5.1 MK2 USB card to downmix
5.1 to 4.0. I have tried this time to time on linux but never got it
working. All the other variations shows up correctly (4.1, 5.0 and 5.1)
but 4.0 is not even listed e.g. on pavucontrol GUI.

I have created a new udev rule to ensure the same configuration is
always used. Udev calls profile "terratec-aureon-51.conf". Currently
there exists only two mappings: 4.0 and 4.1. And only 4.1 shows up
correctly..

---clip---

udevadm info -qall -p /sys/class/sound/card1
P: /devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/sound/card1
E: DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/sound/card1
E: ID_BUS=usb
E: ID_FOR_SEAT=sound-pci-0000_00_1d_1-usb-0_2_1_0
E: ID_ID=usb-0ccd_USB_Audio-00-Aureon51MkII
E: ID_MODEL=USB_Audio
E: ID_MODEL_ENC=USB\x20Audio
E: ID_MODEL_FROM_DATABASE=Aureon 5.1 MkII
E: ID_MODEL_ID=0028
E: ID_PATH=pci-0000:00:1d.1-usb-0:2:1.0
E: ID_PATH_TAG=pci-0000_00_1d_1-usb-0_2_1_0
E: ID_PRODUCT_FROM_DATABASE=Aureon 5.1 MkII
E: ID_REVISION=0100
E: ID_SERIAL=0ccd_USB_Audio
E: ID_TYPE=audio
E: ID_USB_DRIVER=snd-usb-audio
E: ID_USB_INTERFACES=:010100:010200:030000:
E: ID_USB_INTERFACE_NUM=00
E: ID_VENDOR=0ccd
E: ID_VENDOR_ENC=0ccd
E: ID_VENDOR_FROM_DATABASE=TerraTec Electronic GmbH
E: ID_VENDOR_ID=0ccd
E: PULSE_PROFILE_SET=terratec-aureon-51.conf
E: SOUND_INITIALIZED=1
E: SUBSYSTEM=sound
E: SYSTEMD_WANTS=sound.target
E: TAGS=:seat:systemd:
E: USEC_INITIALIZED=28795964

---clip---

aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=ICH6
    Intel ICH6, Intel ICH6
    Default Audio Device
front:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6
    Front speakers
surround40:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6
    4.0 Surround output to Front and Rear speakers
surround41:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
iec958:CARD=ICH6,DEV=0
    Intel ICH6, Intel ICH6 - IEC958
    IEC958 (S/PDIF) Digital Audio Output
sysdefault:CARD=Aureon51MkII
    Aureon5.1MkII, USB Audio
    Default Audio Device
front:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    Front speakers
surround40:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Aureon51MkII,DEV=0
    Aureon5.1MkII, USB Audio
    IEC958 (S/PDIF) Digital Audio Output

---clip---

cat /usr/share/pulseaudio/alsa-mixer/profile-sets/terratec-aureon-51.conf
[General]
auto-profiles = yes

[Mapping analog-surround-40]
device-strings = surround40:%f
channel-map = front-left,front-right,rear-left,rear-right
paths-output = analog-output analog-output-speaker
analog-output-desktop-speaker analog-output-lfe-on-mono
priority = 6
direction = output

[Mapping analog-surround-41]
device-strings = surround41:%f
channel-map = front-left,front-right,rear-left,rear-right,lfe
paths-output = analog-output analog-output-speaker
analog-output-desktop-speaker analog-output-lfe-on-mono
priority = 7
direction = output

---clip---

BR,

-- 
Wille
OH5LEP