the other question is whether the driver need to differentiate those internal subwoofer (your case) and external subwoofer
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/871808 https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040873 those external subwoofer seem need surround40 but yours only need stereo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274401 Title: Internal sub-woofer on Asus G75VW laptop doesn't work. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1274401/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
