[pulseaudio-discuss] Problems with ASUS Xonar D2X & PulseAudio card detection.

[Andrey Semashev]

On 10/22/18 5:45 PM, Russell Treleaven wrote:
> make a safety copy of /etc/pulse/default.pa <http://default.pa>
> edit the file to comment out the following lines like this
> 
> #load-module module-udev-detect
> #load-module module-detect
> 
> add the following lines immediately following the ones you commented out
> 
> load-module module-alsa-sink device=hw:<your_card>,<sink_index> 
> sink_properties="your_sink"
> load-module module-alsa-source device=hw:<your_card>,<source_index> 
> source_properties="your_source"
> 
> You can discover the value for <your_card>, <sink_index> and 
> <source_index> via `aplay -l` and `arecord -l`
> 
> restart pulseaudio
> `pulseaudio -k`
> 
> verify it worked
> `pactl list sinks`
> `pactl list sources`
> 
> Not a fix but it is a workaround

Thanks, but it doesn't really work for me. `aplay -l` shows:

card 0: D2X [Xonar D2X], device 0: Multichannel [Multichannel]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
card 0: D2X [Xonar D2X], device 1: Digital [Digital]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
   Subdevices: 0/1
   Subdevice #0: subdevice #0

so the D2X (analog output) should be "hw:0,0", right? Adding this line:

load-module module-alsa-sink device=hw:0,0

does not add a D2X sink to `pactl list sinks`. Adding this line:

load-module module-alsa-sink device=hw:0,1

does add D2X *digital* ouptut sink. So PulseAudio has a specific problem 
with multichannel (5.1) analog output for some reason.