Anybody else keep getting this? My HDMI is fully connected and I can't figure out why it works when I start up my computer but gives this error after my computer wakes up from sleep mode.
I have this issue intermittently as well. The HDMI-USB -combination cable is plugged all the way into the Rift. I too make my PC take short naps daily (and each night). Running on i7, Windows 10 and GTX 980 Ti with latest non-beta drivers from NVidia.