after researching this bug on-line it is comon to all 7720g with a sub-woofer on all Linux platforms. i have not found any solutions. perhaps contact with the alsa project directly would advance things!
-- acer 7720g laptop 3 spkr's 3rd being sub woofer not working https://bugs.launchpad.net/bugs/516725 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs