Firstly I have to say I'm really enjoying Ubuntu 13.04, many changes seem subtle but overall it seems to be a much improved experience over 12.10. Most notably the snappy gui responsivity is awesome. There's actually not a whole lot I can complain about so far, and that's an unusual experience for me with Linux! But my major grievance at the moment, is having recently upgraded to Raring, I've noticed that:
"sudo su testuseraccount", then running any application, results in that application running without audio. :O( Where as doing the same on Lubuntu 12.10 (although it didn't work on my Ubuntu 12.10 livecd session) the sound is fine.
I imagine if there's no workaround for this, it will totally kill any chance of using Raring Ringtail as a multiseat OS. Also it means applications that won't run at all without audio, won't run when they're running on a secondary login.
I had a look posts regarding simultaneous multi user access to pulse audio, but it's all double Dutch to me, and I suspect most of it wasn't relevant to this particular situation.
So can anyone tell me if there's anything that can be done to get back sound on secondary user sessions?