unity shows sometimes the desktop on desktop unlock dialog

[Sasa Paporovic]

I am on Ubuntu 12.04 64bit updated to 15.4.2012.

when unity lock the user screen and the user try to unlock it again the screenshows in background of the unlock popup the whole desktop as it was before locking.

That is not good. The locking user may not want that anybody could see on what he/she worked at last.

That happend sometimes(25-50%).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Sun Apr 15 14:40:18 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120328)
ProcEnviron:
 PATH=(custom, no username)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 958353, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

[Daniel van Vugt (vanvugt)]

Actually this is not bug 734908. Sorry about that.

[Daniel van Vugt (vanvugt)]

See also: bug 761129 (now expired)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Confirmed. Though I'm not sure Unity or Compiz have anything to do with it. The bug might be gnome-screensaver itself.

[Omer Akram (om26er)]

I see that bug everytime i try to unlock my screen,

[Peter Banka (pbanka)]

I can reliably reproduce this bug if I click the Unity menu bar on the sound icon to pause music and then walk away from the screen. This leaves the menu-bar focused. When returning to the computer, the screen is blank. Moving the mouse results in seeing the entire desktop in an unlocked state. If I attempt to interact with the machine by clicking or typing, the lock screen suddenly pops up and makes me type in my password.

[Omer Akram (om26er)]

@Peter, that's actually different than this bug I believe.

[philosophicles (sc493)]

I have also experienced this bug, also intermittently as per the OP.

My laptop is pretty sluggish: once or twice, having awoken it from sleep mode, the normal desktop/dash/open apps have been shown for long enough that I can actually briefly interact with them (change active window, type text, etc) before the lock screen / password prompt appears. The slowest time, there would just about have been enough time for a quick person to open a terminal and do an `rm -r /` or similar. Therefore I'd say this is pretty security critical :)

[Seth Arnold (seth-arnold)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 49579, so it is being marked as such.

This is a fundamental bug in the design of X11 and cannot be easily fixed within X11.

You should manually lock your screen if a locked session is important to you.

Please continue to report any other bugs you may find.

[Daniel van Vugt (vanvugt)]

I think bug 49579 is unrelated to this.