[oled]: No sound through speakers and 3.5mm jack

[appetrosyan]

Your system information

• Steam client version: 1757452101
• SteamOS version: 3.7.13
• Opted into Steam client beta?: [Yes/No] No
• Opted into SteamOS beta?: [Yes/No] No
• Have you checked for updates in Settings > System?: [Yes/No] Yes

Steam Deck OLED was playing sound fine one moment. Handed it off to someone, then it started producing a 50Hz buzz. Rebooted the Steam Deck. Next day, does not produce any sound.

Desktop mode Troubleshooting

• Opened Sound settings. Found that the filter chain sink was selected and enabled, no sound was playing.
• Tested with wired headset, no sound. Did not recognise that a headset was plugged in. But filter chain sink still existed.
• Tested with a wireless headset, seems to produce sound. Not the best option given the latency, but something I can live with.
• Tested factory reset. It did not help. The haptics are working but the speakers don't.
• Desktop mode no longer shows the filter chain sink as available. The Game mode sound settings have Default and External Device, which are not what I need.

[appetrosyan]

[Saiyaken-PHOENIX]

Ever found and tried this workaround posted here?

[appetrosyan]

That workaround relies on the device being recognised. It is not in my case.

There's no reliable way to tell if this is a software fault, hardware failure or a combination of both.

I contacted Steam Support; they RMAd the Steam Deck.