Release upgrade didn't update nvidia driver

[Alan Pope 🍺🐧🐱 🦄]

This machine had 18.04 LTS. I upgraded to 18.10 and then to 19.04.

My 19.04 system still has the old 390 driver. I had to run `ubuntu-drivers autoinstall` in order to force my system to get the newer 418 driver.

I would have expected my system to get updated to the latest nvidia driver on a release upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: nvidia-driver-418 418.56-0ubuntu1
ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1
Uname: Linux 5.0.0-8-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu25
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 8 16:48:54 2019
InstallationDate: Installed on 2018-10-07 (183 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: nvidia-graphics-drivers-418
UpgradeStatus: Upgraded to disco on 2019-03-19 (20 days ago)

[Alberto Milone (albertomilone)]

Ideally, when performing a release upgrade, we would have a mechanism in place which does hardware detection, and sees if there is a new driver series that might work for your GPU. Unfortunately, we have no such thing, and we rely on transitional packages, only when it is safe to do so.

In this case, the 418 series doesn't cover the same GPU series as the 390 legacy driver, and upgrading users blindly would lead to some users being migrated to a driver series which doesn't support their GPU.

[ArchPhoenix team (archphoenix)]

It is false, transitional package are used even while the next branch would make the user unable to use the GPU due to nVidia dropping support for it.

Example with 418 and 430.