No sound from headphone jack
I have Suse 9.1 on a Dell Inspiron 8600 laptop using ALSA. With no headphones plugged into the headphone jack, I get sound just fine through my built-in speakers. However, when I plug a pair of headphones (the headphones work fine...I've tried several pairs and they work on other computers) into the headphone jack, I get no sound at all...neither from the built-in speakers nor the headphones. I've tried adjusting volumes and anything I could think of with alsamixer but nothing works.
If anyone has ideas or suggestions I'd appreciate it. Thanks!