Some apps prevent the screen from locking

[mydoghasworms]

Some apps (e.g. TuxPaint, but there are others, I think notably ones that run in full screen) prevent the desktop from locking.

Only once you close those apps or windows does the screen lock (or does it come up at any rate).

This is something that has bugged me (and therefore I think it qualifies as a bug) on other distros, e.g. Mint as well.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: lightdm 1.6.0-0ubuntu2.1
ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Tue May 7 16:29:03 2013
InstallationDate: Installed on 2013-05-03 (3 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[mydoghasworms (dumace)]

I didn't flag this report as a security vulnerability, but could it be? I mean if the app that is currently open and full screen has access to some of your sensitive information and you step away without the screen locking, it could give someone a chance to access your details.

[Robert Ancell (robert-ancell)]

The session controls screen locking, not the display manager.