I also had the same issue as in this bug report. To repeat the problem simply have a USB device, in my case an external HDD and plug it in while something is using 3D acceleration (AKA WINE) it happens a lot on my end. As you unmount the device this bug will pop up.
** Changed in: nautilus (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. https://bugs.launchpad.net/bugs/210557 Title: nautilus crashed with SIGSEGV in g_type_check_instance_cast() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/210557/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs