I set up my ASUS X551-CA laptop for hibernating. When tested hibernation, it worked but after a longer period (more than 10 minutes) the system resumes and instantly reboots with file system warnings of the journals. dmesg gave no useful informations, only informs about a succesful resume. The os is Arch Linux with kernel 4.4.5 and systemd 229.
Why reboots the system after a long hibernation?
arch linux;hibernate
When hibernating, there are various ways to wake up the system , in addition to the normal power button ; Eg LAN or USB.[[ Check https://wiki.archlinux.org/index.php/Wake-on-LAN & https://askubuntu.com/questions/61708/automatically-sleep-and-wake-up-at-specific-times ]]After it wakes up, kernel may have detected a faulty hibernate, which may potentially have corrupted the FileSystem , hence kernel triggers a crash or panic , which results in reboot.