Re: Second monitor turns on upon boot but quickly goes to sleep.
2018/12/10 13:28:25
(permalink)
What brought about finding the above -
Helped a friend put together his new X299 Dark / RTX 2080 XC build this past Saturday
Initial bench testing was done with a monitor hooked up to the HDMI port
Put it all in the case, installed the OS with the small monitor in the HDMI port
After everything was together and moved into his office he initially hooked up a new 1440 monitor via DP and the small monitor we were using for initial testing was then hooked up with a longer DP-HDMI cable. He put the DP-HDMI in the top port and the new cable in the port below the HDMI port - was booting with bios on the small monitor
I swapped the cables / ports and all was good. Driver installs were completed
Then we hooked up an HDMI cable that runs to a capture card on another system for streaming and recording, all was good
Sunday he pulled the system out and we worked on cable management clean up and attempted to add some RGB strip lights to the system (light were bad out of the box, waste of time)
Put the system back into his office and I left while he was hooking up the the system, buy the time I got home and on discord he was having a meltdown
He randomly put the monitor cables back in and now the HDMI was the first device - bios could only be seen on the capture machine and was messing with his resolution settings (capture card is an 1080 card, not 4k)
After looking over the thread Cool GTX linked above and looking at GPU-Z we confirmed the port order is as GPU-Z reports and now goes top to bottom
Something has changed since that original thread, since it had been reported it was DP ports first, then HDMI and lastly the USB
At this point if someone is having an issue with port order they need to check it in GPU-Z and adjust their order accordingly, as I would guess some early cards / bioses are like the image above
Cheers all