Headphones not detected when connected to MBP When I plug headphones into output of MBP (15-inch Early 2008) with Mavericks - nothing changes, sound comes from internal speakers, nothing in System Preferences too. SMC reset, NVRAM cleared, sleep/wakeup - same situation:



UPDATE: Upgraded to 10.9.1 - no change
If you see red glowing light coming from it try the toothpick approach: take a toothpick and poke around in the jack until light turns off.

Source from: Apple inc

OS X Mavericks: Audio ports