Nvidia 430.26 behaves a bit differently. It just fails to start as non-
root and gives reasons:

[   897.467] xf86EnableIOPorts: failed to set IOPL for I/O (Operation not 
permitted)
...
[   897.470] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please 
see the
[   897.470] (EE) NVIDIA:     system's kernel log for additional error messages 
and
[   897.470] (EE) NVIDIA:     consult the NVIDIA README for details.
[   897.470] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please 
see the
[   897.470] (EE) NVIDIA:     system's kernel log for additional error messages 
and
[   897.470] (EE) NVIDIA:     consult the NVIDIA README for details.
[   897.470] (EE) [drm] Failed to open DRM device for (null): -2
[   897.470] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -2

So then the NVIDIA driver gives up and Xorg tries the modeset driver
instead. Modeset seems to detect my monitor fine (got the EDID) but then
fails with bug 1813897.

This is now a bit off-topic, but I suspect the above problem with
nvidia-430 will have the same fix as this bug.

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https://bugs.launchpad.net/bugs/1716857

Title:
  nvidia-drm.modeset=1 results in no monitors detected by Xorg

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