I encountered this same issue in a freshly installed Ubuntu 18.04 system. $ uname -a Linux Machine 5.0.0-25-generic #26~18.04.1-Ubuntu SMP Thu Aug 1 13:51:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -rd Description: Ubuntu 18.04.3 LTS Release: 18.04 $ gnome-shell --version GNOME Shell 3.28.4 To discover the error, I ran this app via command line: $ /usr/bin/python3 /usr/bin/software-properties-gtk ERROR:root:Authentication canceled, changes have not been saved ERROR:root:Authentication canceled, changes have not been saved ERROR:root:Authentication canceled, changes have not been saved ERROR:root:Authentication canceled, changes have not been saved ERROR:root:Authentication canceled, changes have not been saved ERROR:root:Authentication canceled, changes have not been saved The above errors appear every time the mouse arrow left-clicks on the checkbox. I circumvent this issue by: 1. left-click on Canonical Partners to select it. 2. left click on the edit button. 3. after the Edit Source GUI appeared, I left-clicked on the "OK" button. 4. finally when I left-click on the checkbox of Canonical Partners, the checkbox becomes selected. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. 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: Confirmed Status in software-properties package in Ubuntu: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1727908/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
