Problem Drivers NVIDIA GeForce GT 630 using nvidia-driver-390 Linux Lite 4.8

[Şerban S.]

Solved! Finally! Struggle no longer... Here’s what worked: https://bugs.launchpad.net/ubuntu/+sourc...ug/1768050
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Hello!
I find your solution way too complicated.
Besides, it worked by chance.
The listed messages, have a different meaning: they mean that you are trying to install a set of packages OVER an existing set.
So what you were supposed to do, was TO REMOVE the existing drivers.
I have an NVidia GK107 which is a GeForce GT630 OEM.
Linux Lite installed the XOrg drivers so I tested the latest package available from NVidia, which is 440.
After installing those packages and testing some video scenarios, I needed to know if there is a difference between XOrg drivers and the NVidia driver package nvidia-driver-440. So, I got the same messages when I wanted to install the xserver-xorg-video-nouveau packages.
After removing those with Synaptic, all went OK.

The difference

With the NVidia 440 drivers, on a 22:45" HD720p video project, it rendered with an average of 37 FPS (See the machine on the left).
With the NVidia 440 drivers, on the same project, it rendered with an average of 31 FPS. A loss of speed of 6 FPS.
Now, I want to test the other versions. On some forums, I found posts that say that the older drivers get better results.
So I assume the next test will be with the NVidia 435 drivers.
If you want to test another set of drivers, you'll have to revert to the default driver (Nouveau) by uninstalling from Synaptic Package Manager, all nvidia-*-xyz driver packages (too many to list them all).
After this, go to "Software & Updates", select "Additional drivers" and choose the driver you want installed.
Although this installer should REMOVE the unnecessary drivers, actually does nothing like this and throws the messages you saw.

Hope this will help you get the best of your video card, switching to the best results driver kit.

All the best!