I got my 17" MacBook Pro as a present a while a go, and love pretty much everything about it. I say "pretty much" because I more or less ONLY use headphones, and the computer doesn't seem to like that. When I plug headphones into the jack... nothing happens, for anywhere from five minutes to an hour. No red light, not even a headphones option in sound prefs. Then, with no apparent warning, the internal speakers will cut out and I suddenly have headphones as MY ONLY OPTION in sound prefs. I begrudgingly accepted this for most of the time i've had the computer, but now I can't get it to switch over to headphones AT ALL. I've tried every fix I can find - SoundSource doesn't help, I tried the BootCamp fixes (I may not EVEN BE RUNNING BOOTCAMP, but I do have a windows drive), nothing fixes the problem. Suggestions?