Several times a week I find that, despite my volume being set to a reasonable setting, I receive no alert sounds (slack, messages, etc). Every time, the alert volume is set to 0. See picture below. When I see this, I crank up the alert volume and all is well.
My best guess at the moment is this has something to with hooking up my laptop to my work desk. I use it in clamshell mode, so I hook up the display port cable and my headphones, etc before the machine is fully awake.
Has anyone else run into this problem? Any thoughts on what I should be looking for?