I have a Dell G3 laptop with an HDMI port and NVIDIA GeForce GTX 1050 Ti. The HDMI output works fine with Windows 10. I can't get the hdmi working with Centos 7 and the MATE desktop using X.Org X11 nouveau video driver. The "Detect Monitors" in Monitor Properties does not show the second screen. In dmesg I see this when I attach the cable:
[ 1746.656017] ACPI Exception: AE_NOT_FOUND, Evaluating _DOD (20130517/video-1268)
xrandr --verbose shows the HDMI disconnected:
https://paste.centos.org/view/4625b8e4
getinfo output:
https://paste.centos.org/view/c6a29316