Ubuntu Software is unable to install a package for drivers for my Radeon HD 6450

[Seija K.]

Whenever I attempt to install a .deb package for radeon for ubuntu 18.04, instead of installing, Ubuntu Software goes to 100%, but then reverts the Install button back. Even worse, there is no error when this happens; the process begins, it stops, and the only information for the user to work with is that the Install button remained instead of turning into a "Remove" button. Not even a warning or error.

Expected Results:
Ubuntu Software alerts the user the package could not be installed with the reasons why, similar to dpkg -i

Actual Results:
Ubuntu Software runs through the installation in less than 3 seconds, and the Install button remains the Install button, the only indication that the installation failed.

Description: Ubuntu 18.04.3 LTS
Release: 18.04

gnome-software:
  Installed: 3.28.1-0ubuntu4.18.04.12
  Candidate: 3.28.1-0ubuntu4.18.04.12
  Version table:
 *** 3.28.1-0ubuntu4.18.04.12 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.28.1-0ubuntu4 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-software 3.28.1-0ubuntu4.18.04.12
ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-37-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
Date: Fri Dec 6 15:12:29 2019
InstalledPlugins:
 gnome-software-plugin-flatpak N/A
 gnome-software-plugin-limba N/A
 gnome-software-plugin-snap 3.28.1-0ubuntu4.18.04.12
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)