https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS
try latest alsa driver most notebook user does not need independent headphone http://www.intel.com/support/motherboards/desktop/sb/CS-034206.htm you can use hda-jack-retask to generate the firmware file and add the hint -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1244127 Title: [W55xEU, VIA VT1802, Speaker, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1244127/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs