[Bug 1727908] Re: Software & Updates application does not permit changes on the "Other Software" tab

[Sebastien Bacher]

@Gunnar, thanks for testing! The sleep is a workaround, not a proper fix
though. I would guess that something in the gtk widgets used is taking a
grab which prevents the shell to be able to displays it's dialog so the
proper fix would be to try to understand if that's an event or something
we need to wait on before doing the call to polkit. If I don't success
to find a better fix I will upload the sleep workaround

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https://bugs.launchpad.net/bugs/1727908

Title:
  Software & Updates application does not permit changes on the "Other
  Software" tab

Status in gnome-shell package in Ubuntu:
  Invalid
Status in software-properties package in Ubuntu:
  Confirmed
Status in gnome-shell source package in Bionic:
  Invalid
Status in software-properties source package in Bionic:
  Confirmed

Bug description:
  
  On the "Other Software" tab, I am unable to select "Canonical Partners".
  Similarly, the other checkboxes on the "Other Software" can not be clicked.
  Clicking on a checkbox has no effect, and a dialog requesting the admin password is not presented.

  However, activating or deactivating checkboxes on other tabs causes an
  authorization dialog to be presented to the user.

  I experience this bug in an an Xorg session.

  sources.list and sources.list.d have the following permissions:
  -rw-r--r--   1 root root  2897 Oct 26 22:35 sources.list
  drwxr-xr-x   2 root root  4096 Oct 26 21:29 sources.list.d

  All files in sources.list.d have the following permissions as this example:
  -rw-r--r-- 1 root root  189 Oct 25 21:50 google-chrome.list

  $ lsb_release -rd
  Description:	Ubuntu 17.10
  Release:	17.10

  $ apt-cache policy software-properties-gtk
  software-properties-gtk:
    Installed: 0.96.24.17
    Candidate: 0.96.24.17
    Version table:
   *** 0.96.24.17 500
          500 http://us.archive.ubuntu.com/ubuntu artful/main amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu artful/main i386 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: software-properties-gtk 0.96.24.17
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  NonfreeKernelModules: wl nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Thu Oct 26 22:45:09 2017
  InstallationDate: Installed on 2017-10-26 (1 days ago)
  InstallationMedia: Ubuntu 17.10.0 2017.10.25 amd64 "Custom Artful Aardvark"
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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