Sound is on-board, no sound card

Kmix shows all settings at max

Hint: I think this is a permissions issue/conflict someplace perhaps
because of the way I do things here. I am logged into the system as
user1, then I "sudo login" to several other users, each having their own
workspace. Sound works from root and user1 but not from any of the
other users. User/Group administration has all users set to "use audio
devices". System is confused. Or, more likely, I am.