I searched for anything close to this topic before starting a new thread; couldn't find anything on Head-Fi or elsewhere, so here goes.
I have a 2011 headless Mac Mini, running Audirvana Plus in the iTunes integrated mode. I am running the latest iTunes, and the latest Mavericks OS (10.9.2). The Mac Mini sends audio out via USB to my W4S DAC II, then to my amp and headphones. I control iTunes with the Apple Remote App on my iPhone or iPad. Everything has been working perfectly..
I decided I wanted to add a small monitor to the Mac Mini, for maintenance and other uses; I ended up purchasing a 19" Samsung 720p TV, hoping to connect it using HDMI.
When hooking the TV up, everything went fine; I had a nice clear picture on the screen. Screen sharing from my laptop also worked much more smoothly, now that the Mac Mini had a screen connected.
The problem was when I tried playing music through my iTunes/Audirvana/W4S setup. For awhile it worked fine; then I got some stuttering with some tracks, and occasionally iTunes would freeze and I couldn't play anything at all. I checked all of the audio-midi settings and system prefs for both sound and displays--everything is set up correctly.
After shutting down the Mini, disconnecting the HDMI cable, and powering up again, everything works perfectly. So there is definitely some issue with connecting an HDMI monitor, and using USB audio out.
Does anyone have any suggestions for correcting this? I'd appreciate any advice-thanks.