[Bug 1874819] [NEW] Cannot change display driver in Software & Updates

[Christians]

Public bug reported:

Fresh 20.04 install: after changing from proprietary nvidia 440 driver
to nouveau and restart, then the Software & Updates does not allow me to
change back to the proprietary drivers, as the buttons are now greyed
out.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: software-properties-gtk 0.98.9
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 24 15:20:08 2020
ExecutablePath: /usr/bin/software-properties-gtk
InstallationDate: Installed on 2020-04-24 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
InterpreterPath: /usr/bin/python3.8
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
SourcePackage: software-properties
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: software-properties (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

** Attachment added: "Screenshot from 2020-04-24 15-27-20.png"
   https://bugs.launchpad.net/bugs/1874819/+attachment/5359504/+files/Screenshot%20from%202020-04-24%2015-27-20.png

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https://bugs.launchpad.net/bugs/1874819

Title:
  Cannot change display driver in Software & Updates

Status in software-properties package in Ubuntu:
  New

Bug description:
  Fresh 20.04 install: after changing from proprietary nvidia 440 driver
  to nouveau and restart, then the Software & Updates does not allow me
  to change back to the proprietary drivers, as the buttons are now
  greyed out.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: software-properties-gtk 0.98.9
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 24 15:20:08 2020
  ExecutablePath: /usr/bin/software-properties-gtk
  InstallationDate: Installed on 2020-04-24 (0 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  InterpreterPath: /usr/bin/python3.8
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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