ERROR: NVIDIA driver is not loaded

Please try a simply reinstall sudo apt install --reinstall nvidia-driver-430 If you boot in uefi-mode deactivate secure-boot if it is set, before.

Been recently running into this problem, so it may be related to a recent update.

Give this a try:

sudo prime-select nvidia

sudo rm /lib/modprobe.d/blacklist-nvidia.conf /etc/modprobe.d/blacklist-nvidia.conf

sudo update-initramfs -u

Reference here

I'm able to boot with dual-monitors, indicating that the GPU ( GTX 970 in my case) is being utilized. However, running into other bugs.

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