Hi all, My new Lenovo P53 has an Intel UHD Graphics 630 and a NVIDIA Quadro T1000 built in. The HDMI port seems to be wired to the NVIDIA graphics. However, dual graphics is not working. When using the nvidia driver and the nvidia-prime package, I can run games on the NVIDIA card using prime-run. But xrandr only shows "eDP1" (internal screen) and "VIRTUAL0", no external ports are recognized. When using xf86-video-nouveau, xrandr shows several DP and eDP-ports and the HDMI port. However, the ports are always shown as "disconnected", even when a HDMI cable is connected (works on another Arch Linux machine). Furthermore, DRI_PRIME=1 glxinfo | grep "OpenGL renderer" always shows the UHD 630. Any ideas how to debug or fix this issue? Thanks a lot, LuKaRo