This bug was fixed in the package software-properties -

software-properties ( bionic; urgency=medium

  * uninstall the actual nvidia packages,
    not only the meta-package (LP: #1753333).

 -- Alberto Milone <>  Wed, 02 May 2018
15:58:01 +0200

** Changed in: software-properties (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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  Using "Software and Updates -> Additional Drivers" to Switch Fails

Status in software-properties package in Ubuntu:
  Fix Released
Status in software-properties source package in Bionic:
  Fix Released

Bug description:
  SRU Request:

  Currently, the Additional Drivers tool uninstalls only the driver package 
that ships the modaliases. When it comes to the NVIDIA drivers (>=390), that 
package is only a meta-package. Removing the meta-package will not uninstall 
the driver.

  We should make sure to uninstall all its nvidia related dependencies,
  not only the meta-package.

  [Test Case]
  1) Open the "Software & Updates" app, and select the "Additional Drivers" tab

  2) Uninstall the NVIDIA 390 driver

  3) Check that, for example, the nvidia-dkms-390 package was

  apt-cache policy nvidia-dkms-390

  The package will be reported as installed, because the current code
  didn't remove it.

  [Regression Potential]
  Relatively low, as the change in behaviour only affects the nvidia driver, 
and it only causes the Additional Drivers tool to remove dependencies of the 
meta-package that have the "nvidia" string in their name.

  When you are in the initial install state, you can easily switch from the 
Nouvea drivers to the Nvidia drivers by choosing the option in "Software and 
Updates -> Additional Drivers".  However, when you attempt to switch back (by 
selecting the nouveau option and clicking Apply), and subsequently reboot, your 
system will still come up using the Nvidia drivers, and you will WTF.

  And then, if you visit Additional Drivers, you will be presented with
  grayed out options for both nvidia and nouvea, and the only selectable
  option will be "continue using manually installed driver".

  The reason for this is that the tool, when reselecting nvidia in the
  GUI, uninstalls the nvidia-drivers-390 package, but because it's a
  metapackage (or at least I presume this is the reason), it doesn't
  uninstall its dependencies, which causes the Additional Drivers tool
  to believe it's in a non-automanaged state, and the nvidia drivers
  never actually get uninstalled.

  You can fix it by doing an apt autoremove and rerunning the Additional
  Drivers tool.  But obviously there is no real way for inexperienced
  users to know this.

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