HelloMichael, Reading your comment explaining something was related to background, I remembered that I try a tweak to personnalize the background of lightdm. below what I done previously cd /usr/share/backgrounds sudo cp LinuxGreen.png warty-final-ubuntu.png
And whith this picture I worked well until an upgrade where I face the infernal loop of lightdm with unity-greeter crash. Since then I uses gdm. Today I simply sudo rm warty-final-ubuntu.png sudo dpkg-reconfigure lightdm And up to now I am able to login using lightdm. So I believe there is a track for this bug, maybe it affects people which played with the lightdm background -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/946674 Title: unity-greeter crashed with SIGSEGV in background_loader_ready_cb() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/946674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs