This bug is closed so please log a new bug if you have any issues.
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https://bugs.launchpad.net/bugs/869571
Title:
gnome-shell crashed with SIGSEGV in g_type_check
I have the same problem on ubuntu 17.10 with gnome shell 3.26.0
Bug usually occurs while tabbing between active windows. The effect is
the screen freezing for some time and when it comes back gnome-shell
restarting (looks same as restarting it with "ALT+F2, r").
I do not have actual reproduction
Thank you for reporting this bug to Ubuntu. Ubuntu 11.10 reached EOL in 2013.
See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
Please upgrade to Ubuntu 16.04 LTS and re-test. If the bug is still
reproducible, increase the verbosity of the steps to recrea