Screen content is fully visible after unlocking screen

[HorstBort]

After locking either via menu or closing laptop lid and unlocking again, the complete screen content from before locking is displayed.

User can not interact with the screen, but cursor can be moved. Blindly typing password and pressing enter unlocks the screen as aspected.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-screensaver 3.6.1-7ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Apr 13 11:30:32 2016
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
 org.gnome.desktop.session session-name 'gnome'
 org.gnome.desktop.session idle-delay uint32 300
InstallationDate: Installed on 2016-04-05 (8 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
SourcePackage: gnome-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)

[HorstBort (haukemuentinga)]

Only happens with "modesetting" driver, with "intel" everything works as expected.

[Ashley Hier (ashbash)]

how is this not fixed?

[Daniel van Vugt (vanvugt)]

HorstBort: The bug title and at least the first paragraph of the bug description don't sound like bugs at all. Can you please reword them?

Everyone else: Please log your own new bugs by running:

  ubuntu-bug gnome-shell

[Launchpad Janitor (janitor)]

[Expired for gnome-screensaver (Ubuntu) because there has been no activity for 60 days.]