I have bought a new Asus Vivo Book pro, and I have the same problem.
In the beginning I couldn't install Ubuntu 16.04 at all. I could do that by
changing acpi=off in the grub file to get over the problem. The installation
was always stuck at "Preparation for install".
Now after installing the Ubunut 16.04 it takes more than a minute to reboot of
shutdown ! I hope this will be fixed soon!
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Poweroff or reboot hangs. Laptop won't shutdown. 16.04
Status in linux package in Ubuntu:
This is about a fresh Ubuntu 16.04 install on a new laptop (asus
x540sa). After pressing the shutdown button in the start menu; the
shutdown procedure starts and in the final splash screen the system
just hangs. Tried a second time by pressing Esc once the splash screen
showed up and I saw that it reaches the line "Reached target shutdown"
and just stops there, no matter how long I leave it there the machine
won't turn off.
I also tried a Kubuntu 16.04 fresh install on the same machine and it
hanged too at the final splash screen where the pulsating logo
stopped. Then I tried with Esc only to see the exact same line in the
The issue seems to affect lately quite many users as shown by the
google results of the past month / week or so.
I have also tried shutting down from the console with shutdown -and
all the parameters after that suggested online- and sudo poweroff but
unfortunately they didn't do the trick. The exact same situation
Unmounting the swap as suggested online doesn't work.
Also rebooting the system is not working either due to the same issue.
So right now the only way for me to poweroff the machine is to press
the power button on the keyboard continuously.
Steps to Reproduce:
2.Do something, anything or nothing
3.Try to shutdown or reboot
The computer is not shutting down: "Reached target shutdown" and hangs there.
Powering off the machine.
For what it's worth, closing the lid won't suspend the system, but
using the menu buttons for suspension will do it.
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