Suspended Ubuntu 17.04 , when "wake up" does full reboot

After installing Ubuntu 17.04 a week ago on my /dev/sda1 partition, all was working properly. Closing the lid put my computer into suspend mode. Opening it up, touching a keyboard touch turned it on, as expected. I installed a set of packages and used it normally.

Then yesterday my chromium / computer freezed completely so I hard-rebooted it.

Ever since, right after the startup screen displaying the word "Ubuntu" upon purple background, there is a quick (1sec) white-on-black text screen message :

On Day one :

/dev/sda1: recovering journal
/dev/sda1: clean 202498/1525920 files, 1470005/6103515 blocks

On Day 2 (few reboots, no real usage nor pkg installations)

/dev/sda1: recovering journal
/dev/sda1: Clearing orphaned inode 130826 (uid=112, gid=118, node=0100644, size=2547)
/dev/sda1: Clearing orphaned inode 130837 (uid=112, gid=118, node=0100644, size=2547)
/dev/sda1: Clearing orphaned inode 130825 (uid=112, gid=118, node=0100644, size=2547)
/dev/sda1: Clearing orphaned inode 130834 (uid=112, gid=118, node=0100644, size=2547)
/dev/sda1: clean, 202523/1525920 files, 1478967/6103515 blocks

And, when I close the lid, opening it back turns the PC on (without pushing the button). I lose all running apps, my browser tabs, etc.

Test | Way to suspend   | Status                                   | Way to open                  | Result 
#1   | close the lid    | Suspended (lightbulb icon light=flashes) | Open the lid > press a touch | Reboots fully
#2   | (menu) > Suspend | Suspended (idem)                         | Press a touch                | Reboots fully
#3   | time goes        | Suspended (idem)                         | Press a touch                | Wake up with previous apps

Any idea how I can solve this and get proper suspension via lid closing and Menu>Suspend ?

PC: https://www.asus.com/Notebooks/K401UB/

Processor : Intel Core i7 6500U
OS: Ubuntu 17.04
Chipset : Integrated Intel® CPU 
Memory : DDR3L 1600 MHz SDRAM, OnBoard Memory 4 GB 
Graphic : NVIDIA® GeForce® 940M

Lets first check your file system for errors.

To check the file system on your Ubuntu partition...