I face a problem since about a month ago. I have a TV connected to my PC with HDMI but audio goes to my stereo (analog). The setup works great but each time the I return from the screen saver, the sound settings revert to a HDMI output only profile. I need the "Analog stereo duplex" setting.
On Oneiric I access this setting: Sound Settings->Hardware (tab) -> Profile:
Anybody know how to keep it from changing or why it happens? It started occurring mid March.