@taihsiang, can you grab the package oem-audio-hda-daily-dkms from https://launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa- daily?field.series_filter=trusty and check again if the problem still exist?
** Changed in: hwe-next Status: New => Incomplete ** Changed in: hwe-next Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1414706 Title: [20ALCTO1WW, Realtek ALC292, Black Mic, Left][Lenovo ThinkPad X240] external mic has no sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1414706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs