I use a Teufel C 200 USB System on Natty, which worked fine with Mavarick and Natty so far. A couple minutes ago, I did a suspend to RAM, woke the computer up a little later and the speakers to not play anything anymore.
I tried maxing everything in the "Sound" Menu in System Settings, tried
pavucontrol, everything is at 100% and the USB device is selected.
The system was restarted twice after that, so that should not be the issue.
When I hook the same speakers to my Natty Laptop, I can just select them as the audio device and music plays.
How can I fix this?