USB Headphones don't work

[Jeremopo]

Sys-audio doesn't start

I’m trying to finally have audio and I was following this guide because I have wireless headphone with USB pen. But when I arrive to this part of the guide and I execute the command qubes-prefs default_audiovm sys-audio, every other existing qube seems broken. I have tried to open other disposable qubes (as apps, not template) and they simply couldn’t start. Also I couldn’t delete the qube, as it was used as default_audiovm, so the OS didn’t let me do it. I have tried to revert the command usi…

Thanks for responding. I have described everything in this issue. I followed step-by-step but I couldn’t continue anyway. Someone have tried to help me, but without success.