I recently installed Ubuntu 18.04 on my new Laptop (MSI GD63 7RD Stealth). The sound volume control is working perfectly until I plug my headphones in. If I do so the sound is also coming from the laptop speakers and with max volume from the headphones. The volume control then only works on the laptop speakers (headphones is always max volume) until its completely off. Then its also off on the headphones.
Does anyone know that behavior and how I can fix this?
pacmd list-sinks | grep -e'name:' -e 'index:'
* index: 0 name: <alsa_output.pci-0000_00_1f.3.analog-stereo>