I see similar behavior on my ThinkPad T61, and I can work around it through Sound Preferences (right-click on the volume applet). There is a drop-down there which selects between headphone output and speaker output.
Apparently, connecting the headphones disables the speakers, but doesn't flip this toggle?
Note I'm running the ubuntu-audio-dev PPA with the latest pulseaudio etc.
I see similar behavior on my ThinkPad T61, and I can work around it through Sound Preferences (right-click on the volume applet). There is a drop-down there which selects between headphone output and speaker output.
Apparently, connecting the headphones disables the speakers, but doesn't flip this toggle?
Note I'm running the ubuntu-audio-dev PPA with the latest pulseaudio etc.