On 8/23/21 19:40, terryc wrote:
> On Mon, 23 Aug 2021 11:20:27 -0500
> hal <vmlinux@???> wrote:

<snip>

>>
>> Thanks, I finally got this working yesterday.
>
> Care to share your set up?


Sure, glad to. I made a pastebin for it here since it would become unreadable posted to the list: https://pastebin.com/XrXtAfPX

My setup (cat /proc/asound/cards):
0) PCH - external speakers/microphone plugged into back of computer
1) Nvidia - I suppose HDMI audio route or something
2) Logitech USB wireless headset with microphone

* I use "xhost +" to allow various users below to run gui on my login. I do not have the X TCP socket listening so remote access to X is blocked. Could be another way to do this I dunno.

* my /dev/snd/* devices are chmod 660 for the "audio" group and all users are members

The problems I have is multiple applications need to access the audio device concurrently but it does not work (until now):

1)
I have no sound in Firefox so sometimes I need to run Palemoon or Chrome for any kind of multimedia content which needs sound (ffs Firefox.. an FOSS embarrassment). Sort of unrelated but it part of the root cause of all this

2)
When I run a web browser, I use a launcher script with sudo to run the browser as "firefox" user. This user cannot play audio if another application has alsa "locked"

3)
Sometime I want to play MP3s on my disk. I run VLC with my login account. I cannot hear any music if the firefox user has a web browser open.

4)
When I launch Steam, a launcher script runs sudo to run Steam as "steamuser". If another application has audio device open, there is no sound in Steam games.


End result: this mostly works now! Thank you guys/gals! I can share the Logitech headset between Mumble and Steam (Valheim) applications when both are run as the "steamuser". Sharing the same device between DIFFERENT users does NOT work though and maybe not possible I don't know (eg: using Mumble on headset then trying to play Youtube video as "firefox" user).