Upgrading to (K)Ubuntu 18.04.5 LTS basically broke the system as X was not restarting correctly (black screen instead of lightdm display or even infinite loop of X crashes based on BIOS/EFI config).
This is critical for non-savvy users as my parents. The issue is the same as can be seen in /var/log/lightdm/seat0-greeter.log with repeated messages like **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... The workaround is indded updating the memlock limits as described above (adding the 2 lines of the above comment to /etc/security/limits.con). Thanks for the workaround :) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start Status in Light Display Manager: Invalid Status in LightDM GTK+ Greeter: Invalid Status in lightdm package in Ubuntu: Invalid Status in unity-greeter package in Ubuntu: Invalid Bug description: lightdm is failing to start. Best guess is because of unity-session- manager. This is from .xsession-errors. dbus-update-activation-environment: setting _=/usr/bin/dbus-update-activation-environment upstart: click-user-hooks main process (4028) terminated with status 1 upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon respawning too fast, stopped upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped xbrlapi: window 0x03a00084 changed to NULL name xbrlapi: window 0x03a00084 changed to NULL name xbrlapi: window 0x03c00084 changed to NULL name xbrlapi: window 0x03c00084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name upstart: dbus main process (4023) killed by TERM signal I've tried to move aside $HOME/.config/dconf/user and that didn't work. I've reverted kernel versions and that didn't work. I've moved aside $HOME/.cache and that didn't work. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: lightdm 1.19.5-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6 Uname: Linux 4.8.0-30-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 Date: Mon Feb 6 10:21:29 2017 InstallationDate: Installed on 2015-07-20 (566 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) SourcePackage: lightdm UpgradeStatus: Upgraded to yakkety on 2016-12-14 (53 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
