Tom,

first: I hope that you noticed that in my latest email, I reported that I am still not able to make use of mod_portaudio; so the instructions I provided on Aug 26 helped to have some progress on my side, but they have not been sufficient...

Now, you said: you "just need to be in the proper group"; I would just add the importance of the proper user to this statement, as well.

The page https://freeswitch.org/confluence/display/FREESWITCH/Debian+Post-Install+Tasks suggests a systemd unit file for FS that includes the directive "User=root". But, there is also the comment saying that FS starts "as root, so Freeswitch can set its priority, create some directories if needed, etc. Then it will drop privileges to continue running as user and group Freeswitch."

Are you using that same unit file? If so, then the following part of my instructions will be essential for the success:

sudo adduser freeswitch audio sudo adduserfreeswitch bluetooth

Otherwise, you must find out as which user the FS is eventually running in your system and then run the above two commands for that user.

I gave up using the jack because it is only for output, but in my application I need both input and output. In the beginning that I didn't know this and was hoping to use the jack for my application, I used the amixer command few times, but I am not very familiar with this command, nor with alsamixer.

From what I have understood so far:

aplay -l and arecord -l will show only your audio devices on sound cards of type hardware (I think that /usr/share/alsa/alsa.conf is somehow involved in this)
aplay -L and arecord -L will also show additional devices defined in /etc/asound.conf and the current user's ~/.asoundrc (such as virtual devices and real devices on virtual sound cards)
mod_portaudio has been only able to see my real devices via bluealsa which acts as a kind of virtual sound card, nothing else!!! This is very strange to me and I haven't found any explanation for that....

Kind regards,

-- Saied

freeswitch-users-request@lists.freeswitch.org wrote on 07-Sep-20 18:07:

ForwardedMessage.eml

Subject:
Re: [Freeswitch-users] mod_portaudio on Raspberry Pi currently broken?

From:
Tom Lynn <tom@tomlynn.com>

Date:
07-Sep-20, 18:06

To:
FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>

Saied,
You are a very determined man! I followed your instructions and yes, this works when I run it from the command line as root. Again, when launched by systemd I come up with no reply when I run pa devlist in fs_cli.

When free time is more plentiful, I will investigate trying to run this as a different user. I think I just need to be in the proper group. I will also need to adapt this to use the 3.5mm output of the pi. Where do you see the device names, in the alsa mixer?