lightdm-gtk-greeter-settings incompatible with wayland

[PeterPall]

As a security measure wayland allows programs *either* to connect to the display *or* to be root: If a program needs root rights to do part of its work it can use packagekit in order to give this specific portion of the program root rights.

lightdm-gtk-greeter-settings both wants root rights and wants to connect to the display - and therefore is denied the latter.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: lightdm-gtk-greeter-settings 1.2.1-2
Uname: Linux 4.15.0-041500rc4-lowlatency x86_64
ApportVersion: 2.20.8-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Dec 19 10:40:50 2017
EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: lightdm-gtk-greeter-settings
UpgradeStatus: No upgrade log present (probably fresh install)

[James Lu (jlu5)]

Hi,

This is a duplicate of https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter-settings/+bug/1713313

I would mark it as such but Launchpad isn't being cooperative and giving me timeout errors.

[PeterPall (peterpall)]

I don't believe #1713313 is an actual bug: Giving noone with root access access to the GUI is part of one of the major features wayland was created for: Hindering a gui application from spying on the screen or the keyboard input of another application.