http://git.alsa-project.org/?p=alsa- lib.git;a=blob_plain;f=test/chmap.c;hb=HEAD
chmap -Dhw:0 query do you mean that you expect only notebook only support 2 ch by default 4 ch is only supported when subwoofer is plugged does the user manual mention that the subwoofer can be plugged (hot- plug0 after the notebooke is power on -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/871808 Title: Asus N55SF/N75SF - External subwoofer not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/871808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
