[Desktop-packages] [Bug 830348] Re: desktop contents briefly visible on resume from suspend before lock dialog

2016-03-20 Thread thunder.glove 
*** This bug is a duplicate of bug 1280300 ***
https://bugs.launchpad.net/bugs/1280300

Yes me too, Ubuntu 15.10 Unity, Toshiba Chromebook 2. I've the below as
I thought it was an issue with the screensaver after reading other
sites. No luck:


gsettings set org.gnome.desktop.screensaver ubuntu-lock-on-suspend 'true'
sudo sed -i "s/NoDisplay=true/NoDisplay=false/g" /etc/xdg/autostart/*.desktop

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https://bugs.launchpad.net/bugs/830348

Title:
  desktop contents briefly visible on resume from suspend before lock
  dialog

Status in Compiz:
  New
Status in unity-2d:
  Confirmed
Status in gnome-screensaver package in Ubuntu:
  Incomplete
Status in unity-2d package in Ubuntu:
  Confirmed

Bug description:
  This seems like a recent regression on Oneiric (or perhaps I haven't
  noticed it before):

  On resume from suspend, the contents of the desktop are often briefly
  visible before being hidden behind the lock screen.  This is a
  security problem if there happens to be sensitive information on the
  screen.


  =Analysis from mdeslaur=
  This is likely what happens:

  1- Something grabs mouse: ie: virtual machine window, or GTK menu in an 
application or an indicator
  2- Screensaver attempts to start, but cannot get exclusive lock on mouse
  3- DPMS turns monitor black
  4- User moves mouse, which turns the screen back on
  5- Mouse movement causes mouse to get ungrabbed by vm window or gtk menu
  6- Screensaver can now grab mouse, and starts

  This is all related to the fact that X does not have an API that will
  let the screensaver tell an application to release mouse and keyboard
  grabs.

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[Desktop-packages] [Bug 1280300] Re: Desktop contents displayed on resume, before lock screen is shown

2016-03-20 Thread thunder.glove 
Yes me too, Ubuntu 15.10 Unity, Toshiba Chromebook 2. I've the below as
I thought it was an issue with the screensaver after reading other
sites. No luck:


gsettings set org.gnome.desktop.screensaver ubuntu-lock-on-suspend 'true'
sudo sed -i "s/NoDisplay=true/NoDisplay=false/g" /etc/xdg/autostart/*.desktop

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-screensaver in Ubuntu.
https://bugs.launchpad.net/bugs/1280300

Title:
  Desktop contents displayed on resume, before lock screen is shown

Status in gnome-screensaver package in Ubuntu:
  Confirmed

Bug description:
  I am running 14.04. When I resume from sleep, the contents of my
  desktop (including any open windows, emails, etc) are displayed
  onscreen briefly before the unlock screen is shown. This potentially
  allows an attacker to view the contents of a locked screen.

  To reproduce:
  1) Suspend a machine, e.g. by closing the lid
  2) Resume the machine

  Expected results:
  Upon resume, the first thing shown onscreen is the screensaver unlock screen.

  Actual results:
  Upon resume, the first thing shown onscreen is the set of open windows that 
were displayed before the machine was put to sleep. After a second or two, the 
unlock screen is drawn and you have to enter a password to unlock the machine.

  This is reproducible on my system.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: gnome-screensaver 3.6.1-0ubuntu9
  ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
  Uname: Linux 3.13.0-8-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Feb 14 09:05:50 2014
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see 
http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-precise-amd64-20130203-1
  EcryptfsInUse: Yes
  GnomeSessionIdleInhibited: No
  GnomeSessionInhibitors: None
  GsettingsGnomeSession:
   org.gnome.desktop.session session-name 'ubuntu'
   org.gnome.desktop.session idle-delay uint32 300
  InstallationDate: Installed on 2013-12-02 (73 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 
20130203-13:50
  SourcePackage: gnome-screensaver
  UpgradeStatus: Upgraded to trusty on 2014-02-12 (1 days ago)

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