/usr/sbin/lightdm:11:__GI___poll:g_main_context_poll:g_main_context_iterate:g_main_loop_run:gdbus_shared_thread_func

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding lightdm. This problem was most recently seen with package version 1.28.0-0ubuntu1, the problem page at https://errors.ubuntu.com/problem/2caf3f014581e7b1203c7adb3fad717bd36ec41a contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.