/usr/share/alsa missing within snap

[Roman Odaisky]

$ ls /snap/chromium/current/usr/share/alsa
alsa.conf alsa.conf.d cards pcm pulse-alsa.conf smixer.conf sndo-mixer.alisp topology ucm

$ sudo nsenter -m -t $(pgrep --oldest chromium) ls /usr/share/alsa
ls: cannot access '/usr/share/alsa': No such file or directory

For this reason there’s no sound. How to make sure that /usr/share/alsa which is present in the snap does not somehow go missing when the snap runs?

[Olivier Tilloy (osomon)]

This is the first report of sound not working in the chromium snap. Are you not using pulseaudio?

[Roman Odaisky (to-roma-from-lp)]

I am not. This is certainly not the place to discuss advantages and drawbacks of pulseaudio, of which it has both, but seeing as both Chromium and snapd itself support ALSA, the chromium snap should also support it.

[Olivier Tilloy (osomon)]

Sure, I didn't imply that you should be using PA. Can you share examples of other snaps with working sound over ALSA ? Thanks.

[Roman Odaisky (to-roma-from-lp)]

I’m not running any other snaps, which one would you recommend to test this?

[Sebastien Bacher (seb128)]

https://forum.snapcraft.io/t/the-alsa-interface/7766 could be relevant there

[Roman Odaisky (to-roma-from-lp)]

`snap connect chromium:alsa` and variations thereof fail with “error: snap "chromium" has no plug named "alsa"”. How to connect?

[Sebastien Bacher (seb128)]

The chromium snaps need work, it's not something you can do now

[Roman Odaisky (to-roma-from-lp)]

So in general it is not possible to connect an interface which the snap didn’t request? If not, sounds like a powerful feature to add. Forcing a custom interface on a snap can be used to affect its filesystem in the desired way.

[Olivier Tilloy (osomon)]

@Roman: the telegram-desktop snap has the alsa plug, so you could try this one, first with the interface not connected (to confirm you're seeing the same issue as with the chromium snap), then connect the alsa interface and let us know whether you're able to play back sound in the snap. Thanks!

[Launchpad Janitor (janitor)]

[Expired for chromium-browser (Ubuntu) because there has been no activity for 60 days.]