I forgot to mention it clearly : the HDMI output sink isn't detected anymore _after_ the power has been *set back to ON*, of course. I did not try to have HDMI output while the monitor was off ;)
- Bug#978550: pulseaudio: Pulseaudio do not detect HDMI output... Thomas
- Bug#978550: pulseaudio: Pulseaudio do not detect HDMI o... Thomas Nemeth
- Bug#978550: pulseaudio: Pulseaudio do not detect HDMI o... Thomas Nemeth