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Graphics Cards

Journeyman III

6900 XT - 6 monitors (HDMI Black Screen)

It's very weird, everything was working and then today when I came home 1 of the monitors was blank.

I check windows display settings and it can see the monitor but it does not work.

- restarted and no success

- updated Adrenalin Edition and no success

- move cable to another monitor and problem moved with it. 

- so changed cable and still not working

- changed settings refresh rates and no luck.

4 Monitors are Samsung S27R35x

2 Monitors are LG Ultrawide

Connected as follows going left to right on video card

HDMI1 - Samsung

DP1 - connected to DP splitter (Samsung, LG Ultrawide)

DP2 - connected to DP splitter (Samsung, LG Ultrawide)

HDMI2 - Samsung (the one not working) 


Currently at a loss right now and would appreciate any insight/help!

Thanks in advance!

2 Replies

Honestly don't know, but spec for my make/model says max 4 displays.

There was an old rule for more than 4,1 DP had to be an active/powered cable, or powered mst hub? 

Or maybe the latest Win CU has caused a conflict.

Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, Aorus gen4 1tb, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T..
Journeyman III

Yeah not sure what has happened. In past I had issues with HDMI ports so I am think to order a 3 way MST DP Hub and moving that HDMI port to display port.

I filled out a support request to see if it get someone where.  

I will also review the specs and see what it says. 

Thanks for the advice.