Actually the login screen is rendered by 'gnome-shell'. I wonder - can you please find the photo file and tell us what its permissions are?
You may want to try changing the permissions in a terminal with: chmod 644 yourphoto.jpg then reboot and tell us if that fixes the problem. ** Package changed: gdm3 (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1814566 Title: User photo is missing in login screen Status in gnome-shell package in Ubuntu: Incomplete Bug description: I inserted the photo using the Users and Groups package and the photo is accepted and displayed(see screenshot). It is also displayed in the authentication screens and the logout screen, but NOT in the login screen. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: lightdm (not installed) ProcVersionSignature: Ubuntu 4.19.0-12.13-generic 4.19.18 Uname: Linux 4.19.0-12-generic x86_64 ApportVersion: 2.20.10-0ubuntu19 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Feb 4 13:01:36 2019 InstallationDate: Installed on 2018-11-08 (88 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20181107) SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1814566/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp