Please install the testing pulseaudio, reboot and redo the test.This pulseaudio is for fixing the issue of "speaker and headphone share the same volume".
https://launchpad.net/~hui.wang/+archive/ubuntu/pa-testing
Please install the testing pulseaudio, reboot and redo the test.This pulseaudio is for fixing the issue of "speaker and headphone share the same volume".
https:/ /launchpad. net/~hui. wang/+archive/ ubuntu/ pa-testing