Comment 77 for bug 1585863

I confirm, sometime suspend fails and syslog says:
(my ubuntu is an upgrade from 15.10 to 16.04) model: asus-n551vw

Jan 29 19:46:39 asus-n551v systemd[1]: Reached target Sleep.
Jan 29 19:46:39 asus-n551v systemd[1]: Starting Suspend...
Jan 29 19:46:39 asus-n551v systemd-sleep[16200]: Failed to connect to non-global ctrl_ifname: (nil) error: No such file or directory
Jan 29 19:46:39 asus-n551v systemd-sleep[16201]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255.
Jan 29 19:46:39 asus-n551v systemd-sleep[16200]: Suspending system…

and next the pc restart!!

Jan 29 20:39:14 asus-n551v kernel: [ 0.000000] Linux version 4.9.4-040904-generic (kernel@tangerine) (gcc version 6.2.0 20161005 (Ubuntu 6.2.0-5ubuntu12) )

I tryed more version of kernel like: 4.7.3/4.8.0/4.8.3/4.9.0 but everything sometime Fails!