Sound coming out both speakers and headphones

[eclay]

I'm running the default ubuntu mate on it and I poked around in the sound settings and didn't find anything there that looked like the answer to this problem.

If you run alsamixer from the console, there are different volumesliders for speaker and headphone (as I remember) if you do scroll to the complete right side....

It seems like possibly on the pinebook alsomixer isn't showing thins in easy to understand words like "speaker".  I see output devices like the following.

Headphone (easy enough to understand what this is)
phoneout mixer lout_mixer_switch [off]
phoneout mixer mic1 boost [off]
phoneout mixer mic2 boost [off]
phoneout mixer rout_mixer_switch [off]
phoneout gain control
i2s hub func [off]
..
..
..
Eventually I found headphone/speakers at the end of this long list.  I was able to turn the volume done on the speakers but there has to be an easier method to switch between headphones and pc speakers.  Like something that detects the headphone being plugged in and muting the speakers like when I'm running linux on a normal intel laptop.  This post mentions something about auto_mute.

https://askubuntu.com/questions/150887/s...d-speakers

Also interesting that when I look at lspci I see no devices lsusb shows the camera and the hardware hubs.  Using aplay -l I can see some useful info but I'm not sure how to translate that into what driver is used for the analog sound device.  Looking at the above post it mentions adding some lines to the /etc/modprobe.d/alsa-base.conf to resolve this issue.

Thanks again for helping me figure this out.