I tried starting from the command line like this:

pd -alsa -inchannels 0 -outchannels 2 -audiodevice 0 (went through audiodevice 0 - 20)

to see if selecting the sound card from the command line makes any difference. Still no sound! Audiodevice 1-4 (from starting with the command line) seemed to show up as the soundcard in the order as listed in the audio properties.

I still have no clue how to get to the audio subdevice if it cannot be used as a multichannel output device. Is there any "hidden" command line option that allows selecting subdevices?

If anybody here has an ASUS Tinkerboard and also has Jack running: Please check what is available from Jack.

Thanks! Ingo

-----Original Message----- From: Pd-list [mailto:pd-list-bounces@lists.iem.at] On Behalf Of Ingo Sent: Wednesday, March 22, 2017 6:03 PM To: 'Jonathan Wilkes' Cc: pd-list@lists.iem.at Subject: Re: [PD] Pd / Purr-Data and Ausus Tinkerboard - analog sound card does not show up (alsa)

VLC was set to "automatic". That means it was most likely using Pulse audio (which is working fine for VLC but not for Pd). Then I set it to ALSA. In this case I had to use "USB Audio, USB Audio #2" in order to get any sound output.

In Purr Data or Pd I can set only "USB Audio" but not "USB Audio, USB Audio #2". Setting USB Audio to 4 channels results in the error that I mentioned in my previous mail:

"ALSA: set output channels to 2"

So it looks like it needs to be set to "USB Audio, USB Audio #2" which is a sub device of "USB Audio" that is neither available in Pd nor in PurrData. Any idea how to make it available?

I already tried installing Jack and see if I can get to it this way but didn't succeed because of some installing errors (missing or wrong dependencies?).

Ingo

From: Pd-list [mailto:pd-list-bounces@lists.iem.at] On Behalf Of Jonathan Wilkes via Pd-list Sent: Wednesday, March 22, 2017 5:11 PM To: Ingo; pd-list@lists.iem.at Subject: Re: [PD] Pd / Purr-Data and Ausus Tinkerboard - analog sound card does not show up (alsa)

...

root@XpressO:~# aplay -l

**** List of PLAYBACK Hardware Devices **** card 0: Audio [USB Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Audio [USB Audio], device 1: USB Audio [USB Audio #1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Audio [USB Audio], device 2: USB Audio [USB Audio #2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: rockchipminiarm [rockchip,miniarm-codec], device 0: ff890000.i2s-i2s-hifi i2s-hifi-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0

...

I don't know where the VLC player is getting ist output list from.

Can you check the VLC preferences to see which audio backend it is using?

-Jonathan

...

Ingo

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