Hello,
Sorry the delay. I picked up the computer from shop after they mentioned no issues with computer when updated to Monterey. Note: shop did not have enough 4k displays to test computer.
Display to cable configuration:
ASUS VP28U - Stock HDMI cable to LMP HDMI to USB C Adapter
Samsung ULED TV 65” - HDMI Cable 15feet(4.5meter), 4K HDMI Lead-Snowkids 18Gbps HDMI 2.0 Cable 4K@60Hz direct into Mac Mini (HDMI Cable 15feet(4.5meter), 4K HDMI Lead-Snowkids 18Gbps HDMI 2.0 Cable 4K@60Hz, 3D Support, Ethernet Function, Video 4K UHD 2160p, HD 1080p, 3D - (for Fire TV, for PS3/4, for Netfilx)
https://www.amazon.ca/dp/B07M65ZB5W...t_i_JW6980N51ZSX4HDJT5YF?_encoding=UTF8&psc=1)
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Computer still having intermittent issues with large Samsung display and ASUS Display.
Asus: display takes a long time to turn on or get connection. I have to boot computer and use Samsung TV to input login details and then ASUS display turns on when OSX has fully booted after user/password login.
Samsung: the HDMI connection seems to be reliable for the most part but every once and a while it won’t work on boot up or restart resulting in me reconfiguring cables and hard restarting computer.
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Monterey - big improvement on how OSX handles displays and now my computer seems to reliably boot with functional HDMI port. However, as of now - ASUS screen is operational but Samsung TV will not pick up information from MAC Mini. Note: issue seems to be better in Monterey. Before, I would dread any type of computer restart as it would not reliably boot. Monterey seems to work 6/10 times. For now, computer won’t be turned off.
Computer still has problems waking displays up unless I use third party app. So, for now I have prevented the displays from sleeping and just turn off ASUS when not in use.
Yes, the cable for the TV is longer then 3ft but the Mac Mini has been branded as a device to run a home theatre system. Some people have rack equipment far away from the screen. HDMI cables are quite capable of long cable runs. Note: changing to smaller cable and placing Mac Mini near TV does not seem to help.
Thoughts?
Edit: I’ve since done more testing and the ASUS display does not work using the smaller 3ft HDMI cable that came with my ASUS monitor plugged directly into the HDMI port and nor does the HDMI port work with my Samsung TV.
I believe the HDMI ports are the problem as I am rubbing both displays without issues while using LMP adapters.