New comment by mvf on void-packages repository

https://github.com/void-linux/void-packages/issues/34596#issuecomment-1185725886

Comment:
> > ```
> > $ strace -f -e open,openat firefox 2>&1 | grep /dev/snd
> 
> It doesn't print anything. No output in terminal.

Sorry, should have mentioned: You have to actually let Firefox try to play audio while running under `strace`.