It turns out I run into another problem. Pluseaudio doesn't prefer headphone in some cases, have to select headphone manually for once to fix it. Anyway the bug doesn't affect kernel v4.15.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583801 Title: No sound via headphones (headset) when Ubuntu boots with them plugged in To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1583801/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs