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