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Issue created by Markus Hartung@hartmark

Sennheiser GSX 1000 - unable to use surround mode

The Sennheiser is a external USB soundcard that is able to act as a surround-device and output it on headphones.

I'm only getting stereo output and switching to the profile "mono chat + virtual 7.1 surround" yields me no sound.

If I run on pulseaudio it works as intended.

% pipewire --version
pipewire
Compiled with libpipewire 0.3.22
Linked with libpipewire 0.3.22

This is what I get from pipewire if I run it from terminal:

% pipewire
[W][000010748.365789][alsa-pcm.c:554 spa_alsa_set_format()] alsa-pcm 0x556cb0a5ec58: Channels doesn't match (requested 8, get 2
[E][000010748.365901][impl-node.c:202 start_node()] (alsa_output.usb-Sennheiser_GSX_1000_Main_Audio_5698800139034192-00.analog-output-surround71-44) start node error -22: Invalid argument
[W][000010748.366160][alsa-pcm.c:554 spa_alsa_set_format()] alsa-pcm 0x556cb0a5ec58: Channels doesn't match (requested 8, get 2
[E][000010748.366214][impl-node.c:202 start_node()] (alsa_output.usb-Sennheiser_GSX_1000_Main_Audio_5698800139034192-00.analog-output-surround71-44) start node error -22: Invalid argument
[W][000010748.366459][alsa-pcm.c:554 spa_alsa_set_format()] alsa-pcm 0x556cb0a5ec58: Channels doesn't match (requested 8, get 2
% pipewire-pulse
[W][000010748.222761][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:12 error:19 (Operation not supported)
[W][000010748.222822][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:13 error:19 (Operation not supported)
[W][000010748.222838][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:14 error:19 (Operation not supported)
[W][000010748.222865][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:15 error:19 (Operation not supported)
[W][000010748.278863][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:16 error:19 (Operation not supported)
[W][000010748.278915][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:17 error:19 (Operation not supported)
[W][000010748.397754][impl-node.c:1040 node_on_fd_events()] (PulseAudio Volume Control-11) client missed 1 wakeups
[W][000010788.677917][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:68 error:19 (Operation not supported)
[W][000010788.686280][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:69 error:19 (Operation not supported)
[W][000010801.151739][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:114 error:19 (Operation not supported)
[W][000010801.157219][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:115 error:19 (Operation not supported)
[W][000010853.358178][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:161 error:19 (Operation not supported)
[W][000010853.366943][pulse-server.c:443 reply_error()] pulse-server 0x55620cf0b450: [PulseAudio Volume Control] ERROR command:87 (EXTENSION) tag:162 error:19 (Operation not supported)