Head Phone Jack's Don't Output Sound

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http://forums.fedoraforum.org – Hello, I am new to Fedora and a noob at Linux in general. Everything seems to work great so far on Linux except my audio jacks. I am running Fedora 18 on a Dell Studio XPS 1647. There are two headphone jacks and a microphone jack which in Windows can be configured to be front, back and center speakers. When I plug in a pair of headphones to either of the two headphone jacks the audio coming from the laptop speakers stop, but the sound does not continue to play from the headphones. I have the same problem with Ubuntu. Thank you in advance for your help. I'd really like to use and learn li (HowTos)