 What do I do if for some reason GNOME shell crashes and the problem can't be reported because apport can't recognize the core dump file
 Good question. I had to go to var logs and start looking for something there
 Or running dmesg and taking notes
 Today for example apport crashed on me when reporting a crash so I was not able to report the crash of the crash because it crashed on that one too. Too many died during that accident I believe.