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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 alsamixer and 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?

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Blacklisting the internal intel soundcard removed it from the sound menu, but there was no sound still. I tried starting alsamixer again and it had different options now, "speaker" was turned down to zero.

It was the easiest of all possible problems after all …

Is probably has a lot to do with this problem, this seems to be the solution for the wrong problem.

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