Op 14 mei 2017 01:15 schreef "Robert W0ng via arch-general" < arch-general@archlinux.org>: Hi, All. For several reasons I decided to remove the group 'gnome-extra' from my system. During the uninstallation, something went wrong. [...] . All of a sudden the system printed a large section of dmesg, saying something like it had run into a kernel bug(?). The pacman was then killed, leaving the zsh reporting a segmentation fault... [Changes lost after reboot] Sounds like hardware troubles to me. You might want to run an (extensive) memtest. It could be something else, but faulty memory is not uncommon and usually my first suspect. You also try a long SMART test of the storage. That could give some insight into possible troube. Mvg, Guus Snijders