Sometime, Beforce 5 seconds that unity lock screen appeared, user sessions screen was visbled

[Kamin Punpipat]

After wake up my computer, sessions screen was visbled in 5 seconds beforce unity lock screen appeared
Rarely that this will happen again

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-settings-daemon 14.04.0+14.04.20140606-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jun 30 19:05:45 2014
InstallationDate: Installed on 2014-01-08 (172 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: unity-settings-daemon
SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
UpgradeStatus: Upgraded to trusty on 2014-04-19 (72 days ago)

[Kamin Punpipat (kaminpattanasin)]

It hard to control applications but it easy to look inside what user do with computer. So this is a Security Bug.

[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.

[Kamin Punpipat (kaminpattanasin)]

I think it not duplicate with https://bugs.launchpad.net/bugs/49579.
And it need to change from Private Security → Public to Public Security also.

[Ananth P (ananthp)]

I often experience this problem with 15.04 and now with 15.10 too.

When I open the lid of the laptop, it wakes up from suspend, and it should show me the (un)lock screen -- according to my settings. But it shows my desktop with all open windows for a moment before showing lock screen.