Multiple monitor trouble

I’ve adquired a new brand GPU gtx 1650 and a new monitor, so I installed the drivers and working perfectly but my older setup now is not working. I have a total of 3 monitors: 1 running with the GPU and the others running with the motherboard/intel graphics outputs. The connections and ports are fine, they even trigger when I shut down the desktop but impossible to detect them to be able to configure the multiple monitor setup. I am on 18.04, tried with xrandrd and I only I can see the inputs of the GPU, same with ARandR and couldn’t detect…