dell alc668 combo jack can support both headphone, headsets (of both CTIA and OMTP type) and mic-in
but it cannot auto matically differentiate headset and headphone
http://voices.canonical.com/david.henningsson/2014/03/07/headset-jacks-on-newer-laptops/
user have to set the jack type every time when they plug the jack
dell alc668 combo jack can support both
headphone, headsets (of both CTIA and OMTP type) and mic-in
but it cannot auto matically differentiate headset and headphone
http:// voices. canonical. com/david. henningsson/ 2014/03/ 07/headset- jacks-on- newer-laptops/
user have to set the jack type every time when they plug the jack