I don't have access to a machine where Ubuntu Focal is installed. AFAICS, this issue currently breaks Ubuntu Bionic LTS completely for non-technical users running Lxde (e.g. Lubuntu) who regularly apply updates (as recommended) without a simple work-around being available.
With non-technical users I'm referring to users who aren't comfortable on the command line. That means they can't just log into the console and enable the proposed updates etc. So I consider this as a pretty serious issue for an LTS release. Releasing it rather earlier than later would probably lead to less people being affected (i.e. those who haven't installed the latest breaking updates yet). -- 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/1890394 Title: Lightdm-gtk-greeter coredump during boot with recent systemd versions Status in lightdm-gtk-greeter package in Ubuntu: Fix Released Status in lightdm-gtk-greeter source package in Bionic: Fix Committed Status in lightdm-gtk-greeter source package in Groovy: Fix Released Bug description: * Impact The lightdm-gtk-greeter often segfaults on VMs * Test case - start a xubuntu livesession in a VM and logout -> you should get a greeter to log in (or install xubuntu in a VM) * Regression potential the mlockall call was supposed to provide improved security but isn't working, it was already commented out some cycles ago in unity-greeter, upstream and it other distributions ------------------ Upstream:https://github.com/Xubuntu/lightdm-gtk-greeter/issues/77 This is one of the many core dumps on `journalctl` for a given boot (dumps multiple times before starting) : **See it on upstream bug report** System Details: System: Kernel: 5.8.0-12-generic x86_64 bits: 64 compiler: N/A Desktop: Xfce 4.14.2 Distro: Ubuntu 20.10 (Groovy Gorilla) (*Proposed) lightdm 1.30.0-0ubuntu3.1: amd64 lightdm-gtk-greeter 2.0.6-0ubuntu1:amd64 lightdm-gtk-greeter-settings 1.2.2-3 linux-firmware 1.189 ------------------------------------------------------ systemd,systemd-coredump, systemd-sysv 245.7-1ubuntu1 ------------------------------------------------------ Current Behaviour: On boot screen blinks for 2-3 times (probably the segmentation fault) but eventually starts after 1-2 minutes. Expected Behaviour: Greeter would appear properly after boot. Note: Some other systemd services are also failing on proposed, not sure if related. ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: lightdm-gtk-greeter 2.0.6-0ubuntu1 ProcVersionSignature: Ubuntu 5.8.0-12.13-generic 5.8.0-rc7 Uname: Linux 5.8.0-12-generic x86_64 ApportVersion: 2.20.11-0ubuntu43 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Wed Aug 5 12:58:44 2020 InstallationDate: Installed on 2020-04-17 (109 days ago) InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200416) SourcePackage: lightdm-gtk-greeter UpgradeStatus: Upgraded to groovy on 2020-08-04 (0 days ago) modified.conffile..etc.lightdm.lightdm-gtk-greeter.conf: [greeter] indicators = ~session;~language;~a11y;~clock;~power default-user-image = /home/korte/Pictures/profile/profile.jpeg mtime.conffile..etc.lightdm.lightdm-gtk-greeter.conf: 2020-06-27T09:26:56.022638 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1890394/+subscriptions -- Mailing list: https://launchpad.net/~lightdm-gtk-greeter-team Post to : [email protected] Unsubscribe : https://launchpad.net/~lightdm-gtk-greeter-team More help : https://help.launchpad.net/ListHelp
