*** This bug is a duplicate of bug 1866044 ***
https://bugs.launchpad.net/bugs/1866044
** Changed in: gnome-shell (Ubuntu)
Status: Triaged => Fix Committed
** This bug has been marked a duplicate of private bug 1866044
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https://bugs.launchpad.net/bugs/1866256
Title:
Disabled animations breaks lock screen and other dialogs, reveals
information from the screen without unlocking
Status in GNOME Shell:
Unknown
Status in gnome-shell package in Ubuntu:
Fix Committed
Bug description:
Dear Ubuntu Team,
I'm using the latest Ubuntu 20 focal, update it every day.
After some of the upgrades something happened and screenlock and other
dialogs became broken (i'll describe below).
It was very hard to find what caused this (i reset all keys in dconf one by
one and restarted) and finally i found it:
/org/gnome/desktop/interface/enable-animations My animations were disabled
(they are slow even on supertop hardware).
So the problem is: it seems that new GNOME 3.36 lock screen and other
dialogs like "Ask for a root password" rely on animations and without
it they do not work or work incorrectly/insecure.
1. Screenlock can lock a screen without any problem. When i try to
unlock it and click by mouse/key, i except a dialog with password
prompt to appear. However, instead of the dialog Screenlock just
shows my screen and running applications with all my data, for some
time. Then it again locks the screen. I can repeat this as many
times as i want and steal all the information. See the attached
video, you will see the dconf-editor running. Sorry for the video
quality.
The only way to unlock the screen is to click an icon at the bottom-
right "Change user". Then i get a list of users, can choose myself
and type a password.
2. Other dialogs like asking for a root password (when it's required
to run an application under root), just do not appear. Screen blinks
and that's all.
Thank you.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.35.91-1ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-17.21-generic 5.4.22
Uname: Linux 5.4.0-17-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu18
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 5 23:32:51 2020
DisplayManager: gdm3
InstallationDate: Installed on 2019-12-11 (85 days ago)
InstallationMedia: Ubuntu-Server 19.10 "Eoan Ermine" - Release amd64
(20191017)
RelatedPackageVersions: mutter-common 3.35.91-1ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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