I'm having a problem that is becoming more consistent. I am using my MacBook with eternal speakers attached to the line out jack. All is well. I pull the plug and insert my headphones and the system plays through the internal speaker - no sound through the headphones. I remove / reinsert to no avail. The ultimate solution varies. Sometimes I can plug the external speakers back in and they work, and then switch to headphones again. Sometimes, that doesn't work and the only solution I've found is to reboot.
I tried Rogue Ameba Soundsource per another post, but it also only sees internal speaker as an option when this occurs. Think this is bad hardware? Ideas?
MacBook 13" (unibody), Mac OS X (10.5.7), iPhone 3G