/usr/bin/gnome-shell:11:clutter_stage_emit_event:emit_event:_clutter_process_event_details:clutter_stage_process_event:_clutter_stage_process_queued_events

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-shell. This problem was most recently seen with package version 45.0-1ubuntu2, the problem page at https://errors.ubuntu.com/problem/430fb8d5733006abef7cc611f1b1ed57b0c6b0a5 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/.