Sound default keeps going back to HDMI/DisplayPort 2

sound 19.10

I'm on latest U19.10 and a curious problem came with this new version: I cannot keep my Sound, Output Device choice to stay on Headphones - Build-in Audio. It always switches back to HDMI/DisplayPort 2. Lock screen, sleep, logout, reboot -- any change kicks it back to HDMI/DisplayPort 2 ... which is a tinny built-in speaker in my monitor. I'm on default Gnome UI on a Thinkpad T450.


Solution from here helped me. https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1850887

Commented out "load-module module-switch-on-connect" in /etc/puslse/default.pa

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