After weeks of flawless play through the HDMI output on an Intel nuc6i5syh roon server (Roon-identified as HDA Intel PCM MI 0 in Settings/Audio/ConnectedToCore), pressing Play this morning made no sound, with the play head never advancing past 0:00. Playing to other outputs (Airplay, or a laptop endpoint) works fine.
A Disable/Enable of this output via Settings led to a hang on the controller. After a server reboot the play head on this output now advances, but still no sound appears from the HDMI output. Volume control mode is DSP (changing to other settings has no effect), no crossfade no volume leveling.
Any log info I could peek at for a clue, or send to you?