Resolved with this commit. User images provided by AccountsService were scaled while default images were not. http://bazaar.launchpad.net/~lightdm-gtk-greeter-team/lightdm-gtk-greeter/trunk/revision/366
** Changed in: lightdm-gtk-greeter-settings Status: Confirmed => Invalid ** Changed in: lightdm-gtk-greeter Status: New => Fix Committed ** Also affects: lightdm-gtk-greeter (Ubuntu) Importance: Undecided Status: New ** No longer affects: lightdm-gtk-greeter-settings ** No longer affects: lightdm-gtk-greeter-settings (Ubuntu) ** Changed in: lightdm-gtk-greeter (Ubuntu) Status: New => Confirmed ** Changed in: lightdm-gtk-greeter (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of LightDM Gtk+ Greeter Development Team, which is subscribed to lightdm-gtk- greeter in Ubuntu. https://bugs.launchpad.net/bugs/1512963 Title: settings allow arbitrarily large user pictures which makes the user lock themselves out at lightdm. Status in LightDM GTK+ Greeter: Fix Committed Status in lightdm-gtk-greeter package in Ubuntu: Confirmed Bug description: To reproduce on a fresh install of ubuntu mate 16.04 start lightdm- gtk-greeter-settings and authenticate to start editing lightdm settings. Please do not try to reproduce this on a production machine as it will involve locking yourself out of lightdm. In the settings for lightdm GTK+ greeter settings select a really large image from a digial camera or high resolution screenshot as your user image that is larger than your screen resolution hit save and then log out. You will be taken to a lightdm screen that has a user image so large you cannot login. Description: Ubuntu Xenial Xerus (development branch) Release: 16.04 lightdm-gtk-greeter-settings: Installed: 1.2.0-0ubuntu1 Candidate: 1.2.0-0ubuntu1 Version table: *** 1.2.0-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ xenial/universe amd64 Packages 100 /var/lib/dpkg/status I would expect the greeter to check that it would not set such redicolous file sizes that block the user from logging in or at least provide a warning dialog that this could make you unable to login similar to things that cause data loss on a partition in ubuquity or gparted. As this prevents even loggin into guest session graphically. I did manage to get back in editing /etc/lightdm/lightdm-gtk-greeter.conf by hand with vim. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lightdm-gtk-greeter-settings 1.2.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.2-0ubuntu1 Architecture: amd64 CurrentDesktop: MATE Date: Tue Nov 3 22:51:13 2015 InstallationDate: Installed on 2015-11-03 (0 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151103) PackageArchitecture: all SourcePackage: lightdm-gtk-greeter-settings UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1512963/+subscriptions -- Mailing list: https://launchpad.net/~lightdm-gtk-greeter-team Post to : lightdm-gtk-greeter-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~lightdm-gtk-greeter-team More help : https://help.launchpad.net/ListHelp