I had the same problem in Ubuntu 18.04.1 with latest Updates to now, Gnome 3.28.2, 64 Bit System.
Problem: Preview of ODT-File lets freeze the whole desktop suddenly (suddenly fan begins to rotate hearable), but nothing works (at least with Ctrl+Alt+F3 I could switch to console and after login as user (no sudo!) I could reboot without problems). Solution: I searched for a possible solution. Then I read #4 ( https://bugs.launchpad.net/ubuntu/+source/gnome-sushi/+bug/1739893/comments/4 ) of "Daniel (2-ubuntuone-4)" and tried his suggustion to install unoconv. Now I am able to preview ODT-files without freezing the X-Server. last but not least: Thank you! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1739893 Title: gnome-sushi freezes my computer when trying to preview .odt-files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-sushi/+bug/1739893/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs