x15 R1, NVIDIA on Linux

I installed debian testing on on a new x15 R1 with the 3070 graphics card. Everything works fine with the default install and I have video on a secondary monitor through the thunderbolt with a USB->HDMI displaylink adaptor. It also boots in wayland.

But the built in HDMI port doesn't work. If I understand correctly that's got something to do with not using the native NVIDIA drivers and an app called bumblebee to take advantage of the GPU switching.

I tried installing the NVIDIA driver from the debian packages (v470.94) and that seems to get be booted again, but now without wayland and still no HDMI. There are also other issues where opening applications (i think that are trying to access the acceleration) force the displaylink screen to go offline, but it comes back automatically after a minute. Also some apps have some really bad flickering, like epiphany web apps, but if i disable hardware acceleration, they work fine.

I tried running nvidia-xconfig and rebooting but then i booted to a blank screen.

I uninstalled that driver and I'm back to where I started.

I tried installing the `NVIDIA-Linux-x86_64-510.47.03.run` file from NVIDIA downloads, and it boots to a blank screen with just a single _ cursor in the top left. I can uninstall and i'm back to where I started.

I've tried a million different tutorials on editing the xorg.conf files, etc, but none of them get the built in HDMI to work.

From what I gather I just have the noveu driver running, and that should be fine, but is that even using the graphics card? ever? And can I still get the HDMI out to work somehow?