[Bug 1296456] Re: [FFe] Upgrade to light-locker 1.4.0

[Pasi Lallinaho]

Approve this upload with my Xubuntu Project Lead hat on; it's in line
with our planning for 14.04.

The Xubuntu documentation team is also fine with this change.

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https://bugs.launchpad.net/bugs/1296456

Title:
  [FFe] Upgrade to light-locker 1.4.0

Status in “light-locker” package in Ubuntu:
  New

Bug description:
  Recently we released light-locker 1.4.0. This release contains one new feature ("late locking") and one new option for an existing feature ("lock on suspend").
  The new feature "late locking" is a nice improvement for users of timed locking (i.e. lock the screen after X seconds), as it allows for e.g. music-playback to continue until the screen is woken up from the screensaver state and the user gets redirected to the un/lock-screen. This is one of the main issues (apart from the screen-flickering) that people complain about when locking via lightdm with VT switching. So, to give an example for this feature, the user sets the screensaver-activation time to 15mins and activates the timed-locking option in light-locker (so the session will get locked after those 15mins). Instead of being directly redirected to the un/lock-screen and hence a new VT (which results in the seat becoming inactive and hence the music or whatever is happening stops), the screen will remain blanked and the user will only get forwarded to the unlock-screen when he wakes up the machine, e.g. by touching the mouse or hitting a key on the keyboard. Only then would music playback stop.
  This feature is optional though and it hasn't been decided whether it would even be activated by default in Xubuntu. But it would be a very good addition and give especially users of single-user environments/machines a choice.

  The option to lock on suspend is also quite helpful, especially for
  users who only want to lock their session when doing so consciously
  (i.e. by executing "light-locker-command -l" in some way). Currently,
  light-locker *always* locks the session upon suspend if it's active
  (it listens to the signal and locks).

  While it may seem that this feature is very new, it was developed in a
  separate branch first upstream and received testing there (with all
  kinds of graphics drivers to make sure e.g. the screensaving works).
  It was then merged to master and after the 1.3.0 development release
  we waited a bit to give translators time to catch up. (Note: Since not
  all languages we'd like to have been translated so far, it's possible
  that we'll do a maintenance 1.4.1 release adding more translations.
  What will be more important to end-users though is the graphical
  frontend through which light-locker can be controlled in Xubuntu,
  light-locker-settings.)

  This package installed in Xubuntu by default and upgrading to 1.4.0 in Trusty has been discussed with the Xubuntu team and confirmed by the Xubuntu Project Lead.
  This upgrade does *not* have any effect on greeters that would be used as un/lock-screens (such as unity-greeter or lightdm-gtk-greeter) – nothing changes in light-locker's interaction with them.

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