One source. One display.
Disconnect the second display and unnecessary AVR/switch stages. Start Source → Vertex → Display. Add the rest only after this path is stable.
SET UP VERTEX
FIRST.
Before changing Apple TV, Dune, JVC, Epson or a television, put the original Vertex in a simple, known-good state. This prevents an EDID, scaling, HDCP or routing change from being mistaken for a source or display problem.
IMPORTANT
Original Vertex is an HDMI 2.0-class, 18Gbps / 600MHz product. Build the first test around 4K60 or lower. The Vertex handles up to 4K60 4:4:4 8-bit, 4K60 4:2:2 12-bit, 4K120 4:2:0 8-bit and 8K30 4:2:0 8-bit (all within 600MHz); it does not support HDMI 2.1 FRL, VRR or ALLM.
Original Vertex is an HDMI 2.0-class, 18Gbps / 600MHz product. Build the first test around 4K60 or lower. The Vertex handles up to 4K60 4:4:4 8-bit, 4K60 4:2:2 12-bit, 4K120 4:2:0 8-bit and 8K30 4:2:0 8-bit (all within 600MHz); it does not support HDMI 2.1 FRL, VRR or ALLM.
Establish picture first.
Use a conservative resolution if necessary. Confirm stable video before enabling HDR, Dolby Vision, scaling or custom EDID.
Open the display HDMI input.
Enable the display's Enhanced / Expanded / Input Signal Plus / equivalent full-bandwidth HDMI mode. Then establish a normal HDR10 signal.
Trust the signal information.
Check the actual input and output resolution, refresh rate, color format, bit depth, HDR/DV state and HDCP state before changing picture controls.
Change one EDID variable.
Choose the EDID mode deliberately in the EDID MANAGER tab: AUTOMIX, CUSTOM (per PORT 0 / PORT 1), COPY TOP SINK, COPY BOT SINK or FIXED EDID. Save a known-good configuration (GUI → Config → EXPORT; restore with Config → IMPORT) before loading an LLDV custom EDID.
Enable player-led DV last.
Only after HDR10 works: advertise the intended LLDV capability, re-handshake/reboot the source if required, verify the actual signal at Vertex, then configure the projector HDR presentation.
Introduce audio equipment.
Add the AVR/soundbar after video is proven. If capability disappears, determine whether that device is changing EDID, HDCP or bandwidth.
Then build the 2×2 system.
Add the second output and scaling/EDID requirements last. A mixed 4K + 1080p system should not be debugged as a single-display problem.
VIDEO ENGINEHDMI 2.0b • 18Gbps • 600MHz • max 4K60 4:4:4 8-bit, 4K60 4:2:2 12-bit, 4K120 4:2:0 8-bit, 8K30 4:2:0 8-bit
EDIDSink / AutoMix / Custom workflows; use custom LLDV EDID only when the source/display workflow requires it.
SCALINGUse 4K↔1080p scaling intentionally for mixed-display systems; disable unnecessary conversion during diagnosis.
DOLBY VISIONVertex facilitates EDID/DV capability and signal control. In an LLDV workflow the compatible source performs player-led Dolby Vision processing.
PROJECTORAn HDR projector may still require a deliberate HDR picture/gamma/tone-map configuration. Vertex does not turn it into a native Dolby Vision panel.