Ubuntu 16.04 hangs on shutdown/restart I encountered this problem before but by editing the line in the /etc/default/grub from
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"
fixes the problem.
But after doing some heavy tasks (like web development) my laptop still hangs on shutdown/restart.
But doing some normal tasks like web browsing my device can shut and restart normally. Any suggestions?
UPDATE: There is a time that my laptop hangs on here: [ OK ] Reached target shutdown [ 6431.968956 ] xhci_hcd 0000:00:14.0: xHCI host controller not responding, assume dead [ 6431.971151 ] xhci_hcd 0000:00:14.0:HC died; cleaning up [ 6431.975210 ] reboot: Power down