Hi. I got new problem on my Retina pro - sometimes my headphone jack not reacts on headphones insertion, and SMC/PRAM reset not fixing it. Only thing is working - reboot laptop with headphones on it. But after notebook coming back from sleep it again cant indicate headphones. Can i somehow trace what exactly wrong with it? software or hardware? Strange thing, but actually hear static noise when plugin headphones in but laptop not reacting.