I'm using Ubuntu 18.04 and it works fine with secure boot on. However when I disable secure boot, Ubuntu can't boot. It get stuck on the purple screen with the Ubuntu logo and white dots.
As suggested in another forum, I added the "nomodeset" option to
i.e. I changed
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"
then I updated grub
$ sudo update-grub2
However Ubuntu still cannot boot with secure boot disabled. The only difference is that the monitor has a lower resolution.
Please can you advise?
PS: I want to disable secure boot because it prevents Ubuntu from loading the NVIDIA driver.
PPS: My NVIDIA card is a GeForce GTX 1060 Mobile.