touch-packages team mailing list archive

[Marco Trevisan (Treviño) <mail@xxxxxxxxx>]

Mh, I think we should fix the problem in unity-settings-daemon, by
connecting at the com.canonical.Unity.Session.Locked signal instead.

Since in unity the screensaver != lockscreen, and we emit the
org.gnome.ScreenSaver.ActiveChanged only when the screensaver is shown
(and this generally happens after that the lockscreen has been
configured).

** Also affects: unity-settings-daemon (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: unity-settings-daemon (Ubuntu)
       Status: New => Triaged

** Changed in: unity-settings-daemon (Ubuntu Trusty)
       Status: New => Triaged

** Changed in: unity-settings-daemon (Ubuntu Utopic)
       Status: New => Triaged

** Changed in: unity-settings-daemon (Ubuntu Vivid)
       Status: New => Triaged

** Changed in: unity (Ubuntu Trusty)
       Status: New => Won't Fix

** Changed in: unity (Ubuntu Utopic)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1438870

Title:
  Lock screen doesn't emit ActiveChanged signal

Status in Unity:
  Confirmed
Status in unity package in Ubuntu:
  Won't Fix
Status in unity-settings-daemon package in Ubuntu:
  Triaged
Status in unity source package in Trusty:
  Triaged
Status in unity-settings-daemon source package in Trusty:
  Triaged
Status in unity source package in Utopic:
  Triaged
Status in unity-settings-daemon source package in Utopic:
  Triaged
Status in unity source package in Vivid:
  Won't Fix
Status in unity-settings-daemon source package in Vivid:
  Triaged

Bug description:
  tl;dr; Unity doesn't emit the ActiveChanged signal when the screen is
  locked/unlocked

  Long version:

  unity-settings-daemon's automount plugin has code to detect whether
  the screen is locked or not before automatically mounting a volume.
  This prevents someone from inserting a USB thumb drive when the screen
  is locked and exploiting a possible nautilus thumbnailer
  vulnerability. (See bug #714958 for original implementation details.)

  In Ubuntu 14.04, this code no longer works. Inserting a USB thumb
  drive while the screen is locked results in a Nautilus window opening
  underneath the lock screen, and the contents of the USB thumb drive
  being read.

  Since the screen lock got switched to Unity in Ubuntu 14.04, Unity no
  longer emits the org.gnome.ScreenSaver ActiveChanged signal when the
  screen gets locked or unlocked.

  To test:

  1- in terminal, type:
  dbus-monitor "type='signal',sender='org.gnome.ScreenSaver',interface='org.gnome.ScreenSaver'"
  2- Lock the screen
  3- Unlock the screen
  4- Notice that no signal was received

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: unity 7.3.2+15.04.20150330-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CurrentDesktop: Unity
  Date: Tue Mar 31 15:15:48 2015
  InstallationDate: Installed on 2013-11-26 (489 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  SourcePackage: unity
  UpgradeStatus: Upgraded to vivid on 2015-03-07 (24 days ago)

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