[arch-general] System freeze when powering down.

[r.kintzi+arch-general at pobox.net.pl]

Hi there,

The hardware is Asus K501UX running linux-4.5.0-mainline from aur and a 
GNOME desktop. The problem is the system freeze when it is powering down 
(not always but very often). See attached files for logs from properly 
(power-down-ok-tail.log) and improperly (power-down-fail-tail.log) 
finished power down sequences. Any clues what should/could I do to fix 
the issue? Let me know if more information is needed.

R.