Public bug reported:
After resuming from S3 (suspend to RAM), KDE's screen locker briefly
shows desktop/application contents before locking the screen, possibly
revealing sensitive information to a third party.
Expected: The screen locker should block the view to the desktop and
running applications instantly after resuming.
Observed: Desktop/application contents can be seen briefly (usually less
than one second).
(Using libkscreenlocker5:amd64 5.7.5-0ubuntu1 on Ubuntu 16.10.)
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: libkscreenlocker5 5.7.5-0ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-32.34-generic 4.8.11
Uname: Linux 4.8.0-32-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Dec 26 11:56:48 2016
InstallationDate: Installed on 2016-11-26 (29 days ago)
InstallationMedia: Kubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
SourcePackage: kscreenlocker
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: kscreenlocker (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
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https://bugs.launchpad.net/bugs/1652612
Title:
KDE screen locker briefly shows desktop after resume from S3
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