/run/lvm/lvmetad.socket: connect failed

Running grub-mkconfig I had the follow result: As reported here, it is a bug which fixing is in progress. Until the fix of the issue, a possible solution ( thanks to antonio ) is to disable the submenus in GRUB editing /etc/default/grub: then relaunch grub-mkconfig and hopefully you will have Continue reading /run/lvm/lvmetad.socket: connect failed