I seem to have shot myself in the foot again.

I'm using LinuxMint 18, KDE version.

I was checking out the icons in the system tray and clicked on the Driver manager. The nice window said that an nvidia driver was the recommended one so I selected it. It was downloaded and installed(?). I had been using the default driver.

Apparently not completely though as now I have no GUI. Just a blank screen. I suspect a simple configuration file change is all that is needed, but what?

I have a backup, but I would really rather make this work if possible.

Thanks,
Jim

The default driver is the noveau driver.
This driver is fully functional.

It is not nessecary to install the nvidia driver.
What says xorg.0.log?

If you can get to a bash prompt in single user mode as root, there should be a text mode version of the program that LinuxMint 18 uses to manage computer settings. Possibly, that program might be able to undo the change you made to your display driver selection?

I've been using nVidia 375.26 (currently the latest version) for the past couple of weeks with the OS, kernel version and hardware in my signature. So far I've experienced zero problems.

(Source)
Proprietary GPU Drivers : “Graphics Drivers Team” team
https://launchpad.net/~graphics-driv...ive/ubuntu/ppa

A tip for Linux Mint users who find it desirable or necessary to change from one nVidia driver version to another:

- Via Driver Manager install xserver-xorg-video-nouveau

- Reboot

- Then install the desired version of the nVidia binary driver

- Reboot

If you currently can't boot into the LM desktop then at the GRUB choose 'recovery mode' (or whatever it's called. It's been a while) and just keep clicking 'OK' until you're in the desktop and can install xserver-xorg-video-nouveau and the above ppa.

I removedfrom /etc/modprobe.d and addedto /etc/modules.

Now things are working again.