Wow, that's crazy. The "pulseaudio volume control" shows all profiles like previous versions of ubuntu did. After changing to 5.1 (the music is ok, then) there's a new entry "USB Sound Device Analog Surround 5.1" on the default audio settings dialog. I still cannot change the mode ("Digital Stereo (IEC958)" is preselected), but when clicking the "Testsound"-Button, it shows up my 5 speakers and the subwoofer, also the testvoice is played correctly.
@tobias: Thank you for providing the solution. Using stereo sound on a surround system is a showstopper for me. Now I don't have to fear a "too-late-to-fix" as there's a way to go around this problem. However I really hope it will be fixed before the release - newbees will be thinking it's a hardware issue and leaving ubuntu. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/954799 Title: unable to use 5.1 with an external trust sound card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/954799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs