I booted system as usual, typed 'startx' as I usually do and kernel suddenly crashed. Issue doesn't reproduce. Core dump attached. http://afiskon.ru/s/77/2bdbb32ae9_core.txt.1 http://afiskon.ru/s/5b/d760728dfe_vmcore.1.tgz
I'm sorry that this bug report never got addressed. In the meantime, FreeBSD 11 has fallen out of support.