Cant play sound and not smooth picture.

[Kepkep]

Dear DVDFab staffs.

May be this only happens my Macpro 2012 but Im having problem.

When I choose line-out audio, it doesnt play any sounds then plays picture something strange.
Sometimes it doesnt even play anything at all. It doesnt start, just black screen only. Or plays picture barely with terrible noises. It comes out of the speaker.
So, I had to choose internal devise again. Then it can start playing.
Please help. Wondering if it would be possible for you to tell me whats wrong with my Macpro. Any settings?


MacPro mid 2012.
Latest OS X Mervericks
NVIDIA GTX 680 for MacPro version.

[geilee]

Hi,Kepkep
Please tell us your audio device and the Audio Settings(Such as : Output Mode, Output Device, Speaker in Settings->audio page) .