post the output of alsa-info.sh if you are using desktop with hda codec
the copy front mode of hda driver copy stereo to other channels (surround speakers) when you playing stereo you need pulseaudio to perform correct upmix ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1193612 Title: Subwoofer=Front Right? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1193612/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs