The file /etc/lightdm/ligtdm.conf is being created while running postinst script from lightdm-{kde,gtk}-greeter package. The script needs the /usr/lib/lightdm/lightdm-set-defaults binary. This binary is owned by lightdm package so it is necessary to install lightdm package before or at the same time with lightdm-{kde,gtk}-greeter. If lightdm package was installed after one of the lightdm-greeter packages, you may run "dpkg-reconfigure lightdm-kde-greeter" or "dpkg-reconfigure lightdm-gtk- greeter" (depending on the greeter package you have installed) to generate the proper /etc/lightdm/ligtdm.conf file. This method helped me to solve the problem.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/842194 Title: greeter doesn't start "failed to load session file" Status in lightdm package in Ubuntu: Triaged Bug description: As of today, lightdm on oneiric doesn't show a login screen. I have verified the greeters are installed so this is different to bug 816646. The most likely lines in the log seem to be Failed to load session file /usr/share/xgreeters/.desktop: No such file or directory Failed to start greeter Stopping display I'm just left at a text screen with various stair-stepped log messages. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: lightdm 0.9.3-0ubuntu8 ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4 Uname: Linux 3.0.0-10-generic x86_64 Architecture: amd64 Date: Tue Sep 6 08:32:54 2011 EcryptfsInUse: Yes ProcEnviron: PATH=(custom, user) LANG=en_AU.UTF-8 SHELL=/bin/zsh SourcePackage: lightdm UpgradeStatus: Upgraded to oneiric on 2011-08-23 (12 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/842194/+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