/usr/bin/gnome-shell:11:meta_drm_buffer_get_fb_id:dispatch_page_flip:maybe_dispatch_page_flips:meta_kms_impl_device_simple_process_update:meta_kms_impl_device_process_update

[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 40.5-1ubuntu2, the problem page at https://errors.ubuntu.com/problem/66752426c1c24b82f6790e19f0df12b5ee045e27 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/.