I have graphics card Radeon R9 200 series (apparently 290x 2gb), it has 4 ports — HDMI, Display port, DVI-I, DVI-D.
Main display is connected through HDMI and working fine. Second one is connected through DVI-D and working fine.
Today I purchased third monitor which has VGA port, so I use this setup: monitor -> VGA-VGA wire -> VGA-DVI-A adapter -> DVI-I in the graphics card.
Apparently DVI-A into DVI-I port is working fine thanks to my motherboard that has it, so I checked it.
What happens is when I try to connect all 3 monitors, Windows 11 detects all of them but when I select anything than "Disconnected" in display options it automatically resets to "Disconnected". But when I manually disconnect one of my first 2 monitors, and try connecting my new one, it works just fine.
So I can connect only up to 2 monitors at the same time.
Things I tried: connected all 3 monitors to the motherboard and they work all at once fine (I have Intel core i5 4460), from which I decided this is graphics card related issue. Then I tried to install driver, didn't help.
I also tried leaving first 2 monitors to graphics card, and connected third one to motherboard, they work fine all together.
The thing I don't get is what stops me from connecting them all to graphics card.
How to fix that?