RM1 Comet: with 1.90 firmware, audio does not work

I just realized that my audio is not working (dont use it everyday). i knew it was working before so i downgraded it to 1.82 and it is back.

is this known issue with 1.9??

So, it’s Mic or speaker can’t work?

both not working for me. downgrade to 1.82 and is all good.

That doesn’t make sense. Have you manually modified the backend configuration file?

No, nothing custom

That doesn't make sense because the speaker is read through the HDMI chip, which is purely hardware-based and unlikely to encounter strange USB compatibility issues.