Comment # 4
on bug 67550
from Christian König
(In reply to comment #0) > #2, without xorg.conf > The receiver sends its own EDID block, so I can extend via xrandr without > turning on the projector. > But the projector is turned off in most cases, so is there a way to disable > a display output but keep the HDMI audio output? (as a workaround for #1) Nope, unfortunately not. It's by HDMI design, the audio signal is mixed into the vertical and horizontal blank periods of the video signal -> so if you don't have a video signal you don't have audio also. As a workaround you could try to setup a second X server or framebuffer or something like that (kms console?) on the HDMI output to just get a video signal on it.
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