[Bug 785117] Re: [MASTER] silently fails to install software after PolicyKit error

[Selene Scriven]

To clarify, there are two bugs here.  One is that Software Center
doesn't work without PolicyKit running (could use gksu or similar as a
fallback), and the other is that Software Center doesn't show an error
to the user if there is an unhandled exception.

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https://bugs.launchpad.net/bugs/785117

Title:
  [MASTER] silently fails to install software after PolicyKit error

Status in “software-center” package in Ubuntu:
  Triaged

Bug description:
  Whenever the policykit authentication agent isn't running (ie failsafe
  sessions, custom sessions etc), then the install/remove buttons
  briefly become insensitive, after which the transaction fails and the
  buttons become sensitive again.

  ---

  If I try to install software with Software Center, nothing happens
  aside from dumping some errors to the shell I ran it from.  The
  install button greys out for a moment then goes back to its original
  state.  This is on Ubuntu 11.04 with software-center 4.0.1 and
  policykit-1-gnome 0.99-1ubuntu4.

  I suspect this probably has something to do with me not running gnome,
  kde, xfce, or any other desktop environment.  I have a window manager
  (sawfish) and that's about it.

  Steps to reproduce:
  1. Run software-center from a terminal of some sort.
  2. Select a package.
  3. Click "Install".

  Actual results:
  Errors dumped to parent shell, and then the Install button goes back to a normal, clickable state.

  Expected results:
  User is asked for sudo password, then software is installed.
  If anything goes wrong, Software Center should notify the user through its GUI in case they aren't running it from a shell.  (dumping errors to the shell is also okay, but shouldn't be the sole error-reporting mechanism)

  Additional information: attached below

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