WD19 (180W) non-TB 2x Dell Ultra-wide Gaming S3422DWG Mac mini M1

Hi there,

When I connect my previous mac (Intel Macbook Pro) I was connecting 1 monitor through a USB-C cable from the mac and the other through the WD19. It was working great. 

Now I have a mac mini M1 and I am having issues. I do the same, one monitor is connected directly to the mac on HDMI, works.

The other monitor, I connect it through the WD19, and either I use the DP or HDMI port from the dock, I cannot get a picture. The OS does sees the monitor (I can see it on the control panel), but the monitor is looking for the signal then goes to sleep. I changed the cables, tried different combinaison of ports, nothing works.

What should I do next? Right now I use the dock, but I have to connect the 2nd screen through the 2nd USB-C on the mac. But I need to use this port for other things.

Thank you!