Comment 35 for bug 1841718

I have installed both xserver-xorg-video-amdgpu-hwe-18.04 and xserver-xorg-video-ati-hwe-18.04

$ aptitude show xserver-xorg-video-amdgpu-hwe-18.04

Package: xserver-xorg-video-amdgpu-hwe-18.04
Version: 19.0.1-1~18.04.1
New: yes
State: installed
Automatically installed: yes
Priority: optional
Section: x11
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Uncompressed Size: 186 k
Depends: libc6 (>= 2.17), libdrm-amdgpu1 (>= 2.4.73), libgbm1 (>= 10.2~0), libudev1 (>= 183), xorg-video-abi-24,
         xserver-xorg-core-hwe-18.04 (>= 2:1.18.99.901)
Suggests: firmware-amd-graphics
Conflicts: xserver-xorg-video-amdgpu, xserver-xorg-video-amdgpu:i386, xserver-xorg-video-amdgpu-hwe-18.04:i386
Replaces: xserver-xorg-video-amdgpu, xserver-xorg-video-amdgpu:i386
Provides: xorg-driver-video, xorg-renamed-package, xorg-renamed-package-hwe-18.04, xserver-xorg-video-amdgpu
Description: X.Org X server -- AMDGPU display driver
 This package provides the 'amdgpu' driver for the AMD Radeon cards. The following chip families should be supported: Bonaire, Hawaii,
 Kaveri, Kabini Mullins, Iceland, Tonga, Carrizo, Fiji, Stoney.

 More information about X.Org can be found at: <URL:http://www.X.org>

 This package is built from the X.org xf86-video-amdgpu driver module.

$ aptitude show xserver-xorg-video-ati-hwe-18.04

Package: xserver-xorg-video-ati-hwe-18.04
Version: 1:19.0.1-0ubuntu1~18.04.1
New: yes
State: installed
Automatically installed: yes
Priority: optional
Section: x11
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Uncompressed Size: 46.1 k
Depends: libc6 (>= 2.4), libpciaccess0, xorg-video-abi-24, xserver-xorg-core-hwe-18.04 (>= 2:1.18.99.901),
         xserver-xorg-video-radeon-hwe-18.04
Suggests: xserver-xorg-video-r128, xserver-xorg-video-mach64
Conflicts: xserver-xorg-video-ati, xserver-xorg-video-ati:i386, xserver-xorg-video-ati-hwe-18.04:i386
Replaces: xserver-xorg-video-ati, xserver-xorg-video-ati:i386
Provides: xorg-driver-video, xorg-renamed-package, xorg-renamed-package-hwe-18.04, xserver-xorg-video-ati
Description: X.Org X server -- AMD/ATI display driver wrapper
 This package provides the 'ati' driver for the AMD/ATI Mach64, Rage128, Radeon, FireGL, FireMV, FirePro and FireStream series. This
 driver is actually a wrapper that loads one of the 'mach64', 'r128' or 'radeon' sub-drivers depending on the hardware. These sub-drivers
 are brought through package dependencies.

 Users of Rage, Mach, or Radeon boards may remove this package only if they use Driver "r128", "mach64", or "radeon" in /etc/X11/xorg.conf
 instead of relying on autodetection.

 More information about X.Org can be found at: <URL:https://www.X.org>

 This package is built from the X.org xf86-video-ati driver module.
Homepage: https://wiki.freedesktop.org/xorg/RadeonFeature/