I've have the same problem since a kernel update in 10.10 (don't know which one sadly). The soundcard is recognized without errors but any try to play sound fails (e.g. in the "test speakers" window in the sound preferences).
The problem is still there after upgrading to 11.04 beta and even with the 11.04 beta live cd. ** Attachment added: "Output of alsa-info.sh" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/731660/+attachment/1972271/+files/alsa-info.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/731660 Title: [Ubuntu 10.10 0 - Soundblaster CA0106] ALSA test tone not correctly played back & no sound playing in any application, including system sounds -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs