I usually run sound from my laptop through my headphone jack into a mixer so I can listen to music through my big PA speakers. The moment I upgraded the OS, however, it stopped working when plugged in, no audio at all. Sound still comes through the laptop speakers when unplugged, though. I dual boot, so I logged into Windows and the sound worked fine. What should I do to fix it?
closed as off topic by fossfreedom♦ May 16 '12 at 19:35
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