Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1897491 When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. -- 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/1897491 Title: greeter hang with 100% CPU with black display Status in lightdm-gtk-greeter package in Ubuntu: New Bug description: Description: Ubuntu 20.04.1 LTS Release: 20.04 lightdm-gtk-greeter: Installed: 2.0.8-1ubuntu1 Candidate: 2.0.8-1ubuntu1 Version table: *** 2.0.8-1ubuntu1 100 100 /var/lib/dpkg/status 2.0.6-0ubuntu1 500 500 http://ports.ubuntu.com focal/universe armhf Packages Chromebook armv7 install of focal tarball, followed by manual upgrade and xubuntu-desktop install. Selecting lightdm display manager results in the above behavior. Switching to gdm3 *does* work, however, requiring a full gnome-desktop install seems to defeat the purpose of xubuntu-desktop. The workarounds using Memlock in the service file for lightdm have no affect, and neither does a native arm package rebuild of 2.0.6. The one thing that *does* work (besides switching to gnome) is building the debian 2.0.8 package using ubuntu deb tarball. Otherwise all you get are the log errors shown below. The greeter log shows the following: ** Message: 19:40:54.740: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10) (process:5105): GLib-ERROR **: 19:40:54.851: creating thread 'gmain': Error creating thread: Resource temporarily unavailable ** Message: 19:51:32.569: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10) (process:5597): GLib-ERROR **: 19:51:32.571: creating thread 'gmain': Error creating thread: Resource temporarily unavailable ** Message: 20:07:27.951: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10) (process:6133): GLib-ERROR **: 20:07:27.954: creating thread 'gmain': Error creating thread: Resource temporarily unavailable ** Message: 20:09:14.102: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10) (process:6244): GLib-ERROR **: 20:09:14.105: creating thread 'gmain': Error creating thread: Resource temporarily unavailable ** Message: 20:10:52.081: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1897491/+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

