First of all, I've confirmed that the hotplug protocol for both DP 1.2 and 1.4 is identical, as well as the EDID (thanks, backward compatibility!)

One thing I'm currently unsure about is

1) How not to degrade DP 1.4 signal so 144Hz signal is not corrupted upstream

2) How to continuously provide EDID signal so the graphic card doesn't go crazy when the monitor is turned off (nobody knows how well the hardware handles having nothing inputted when it should)

So here's a plan on the research aspect: (feel free to provide information through the chat feature)

• Figure out a way to capture the EDID data stream, save it, and play it back
  • Or program a custom EDID data and play that back instead (could be used to disable speakers if desired)
  • Since it's I2C data (I2C EEPROM), this should be not insanely hard
• Make the trace so it doesn't corrupt the DP v1.4 (1920*1080 144Hz or 4K 60Hz) stream
• Or modify a cable so it can be used as a way to intercept the signal