Note: this is not a request for troubleshooting help.
For the past few years my 10ish year old “smart” TV will maybe once a week or so completely lose the ability to play sound in the Youtube app, and only in the Youtube app. Sound works just fine everywhere else. Bizarrely this is always triggered by an ad and never a video. Restarting the app doesn’t fix it, and neither does clearing the cache. Fortunately doing a full restart of the TV fixes it, it’s just irritating to have to restart because an ad somehow broke the sound.
What technological gremlins haunt you?
My monitor currently loses signal every now and then in some (not particularly demanding) fullscreen games in Linux (e.g. Axiom Verge did it several times the other day). It uses the same refresh rate and resolution as my regular desktop. Switching to a console (which uses a different refresh rate, and I assume re-establishes the connection) and then back to Wayland resolves it.
No kernel log errors.
I first noticed it shortly after moving an external antenna with a cable that had been sitting next to the DisplayPort cable; I don’t know whether it’s just used by my motherboard for WiFi (which I don’t use) or for Bluetooth (which I do) as well. Could maybe try repositioning that.
I don’t believe that it used to do it, so it’s a new issue, but I haven’t cared enough to really dig into it. If I did, I suppose I’d probably go back and try to find a reasonably-reliable repro case, then go back and try installing older versions of drivers. On the hardware end, maybe try putting a bigger PSU in the system, on the off chance that it has anything to do with power limitations (but I’d guess that it’s software).
Hmm. Now that I think about it, I really only use Bluetooth for game controllers, and I think that in all the games that I’ve seen this in, I’m using my controller. If the antenna is used for Bluetooth transmission, in games, that might actually be a good explanation.