[Bug 1660100] Re: Unable to enable or disable repository in Software & Updates

[Adric Norris]

I've attached a strace of software-properties-gtk, taken with the
"strace -fr -o software-properties-gtk.strace software-properties-gtk"
command. The only thing which stands out to me is that there are a *lot*
of EAGAIN entries for file descriptor 3, which appears to be the local
"/tmp/.X11-unix/X0" socket. The file exists, and has what I'd expect to
be usable ownership and permissions.

     $ ls -l /tmp/.X11-unix/X0
     srwxrwxrwx 1 adric adric 0 Feb 12 09:24 /tmp/.X11-unix/X0

AS PJSingh5000 indicated, the only message displayed on the terminal was

   ERROR:root:Authentication canceled, changes have not been saved

** Attachment added: "strace of software-properties-gtk"
   https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1660100/+attachment/4817552/+files/software-properties-gtk.strace

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https://bugs.launchpad.net/bugs/1660100

Title:
  Unable to enable or disable repository in Software & Updates

Status in software-properties package in Ubuntu:
  Confirmed

Bug description:
  The Software & Updates dialog (software-properties-gtk) does not allow
  the user to activate or deactivate repositories.

  
  RECREATE ISSUE:

  Launch Software & Updates.
  Select Other Sources tab.
  Click on a check box next to a repository to enable or disable it.

  
  RESULT:

  The window seems to lose focus, but noting happens.

  
  EXPECTED RESULT:

  A dialog should appear prompting the user to enter the administrator password.
  After the password is successfully entered, the repository check box should be toggled (enabled or disabled).

  
  OTHER DETAILS:

  This issue was tested on Ubuntu-Gnome.

  $ lsb_release --all
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 16.10
  Release:	16.10
  Codename:	yakkety

  $ uname -a
  Linux PS001 4.8.0-34-generic #36-Ubuntu SMP Wed Dec 21 17:24:18 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: software-properties-gtk 0.96.24.7
  ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11
  Uname: Linux 4.8.0-34-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Jan 28 23:14:17 2017
  InstallationDate: Installed on 2017-01-24 (4 days ago)
  InstallationMedia: Ubuntu-GNOME 16.10.0 2017.01.23 amd64 "Custom Yakkety Yak"
  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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