I have a similar problem in edgy with my two sound cards. Sometimes the cmedia card is used and other times the sis is used, but c-media was set to default in the settings. I have attached the dmesg output right after boot of both cases.
** Attachment added: "dmesg after boot when sound output is on cmedia card" http://librarian.launchpad.net/5712548/dmesg_sound_on_cmedia.txt -- Default sound card selected incorrectly on boot https://launchpad.net/bugs/45786 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
