Hi,
It looks like to be the same problem as reported here: No sound and video stutters (#4500) · Issues · e / Backlog · GitLab
The proposed solution is explained there (need to do a sideload in recovery) : No sound out of loudspeaker and headphones since upgrade from 16 to 17.1 (#1919) · Issues · LineageOS / issues / android · GitLab
I’m thinking to perform an upgrade of my XA2 but i’m worried about this issue, I would be interested to have your feedback it’s if it’s working fine after it. I hope it will.