When I comment out my pcm.!default line in .asoundrc, I get this result: $ ./chmap -D default query Cannot query maps
it is because pulse plugin does not support channel map ./chmap -D pulse query -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247719 Title: crackling, popping, clicking in playback to audigy2 surround51 device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1247719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs