I have this problem as well. I'm running Ubuntu Feisty AMD64 and have a 2 sound card setup. Card 0 is a HDA Digital X-Mystique 7.1 (based on the C-Media CMI8768 MC8 chipset), and card 1 is an old SB Ensoniq Audio PCI, which also uses a Sigmatel chipset like the OP's card above. The C-Media card doesn't have anything to do with the error, only the SB card and its 'invalid character' is mentioned. Attached is the full error message, which is the same as the above, apart from the different chipset (it's in German too, btw). The application still works despite this error.
** Attachment added: "mixer_error" http://librarian.launchpad.net/7384428/mixer_error -- error message when gnome-alsamixer is launching https://bugs.launchpad.net/bugs/106903 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
