Specs:

• OS: Ubuntu 16.04.1 LTS Xenial amd64
• Laptop: Acer Aspire E 15 | Model E5-511-C7NE
• WakeOnLan: Off

I looked on stackexchange and on Ubuntu forum, but I couldn't solve it.

I try to shutdown my laptop, but instead it reboots after 3 or 4 seconds.

When I first installed the OS, it was fine. The problem started to happen after I sudo apt-get update && sudo apt-get upgrade, but I already made a clean reinstall of the OS, so the problem is persisting through HD formatting.

I tried editing /etc/default/grub to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" acpi=force apm=power_off

and

GRUB_CMDLINE_LINUX_DEFAULT="acpi=noirq quiet splash"

And running sudo update-grub on both edits.

None of them worked, the computer actually gets stuck in a black screen with lots of lines of code (I waited a lot to make sure it was really crashed), so the line is back to its original:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

I tried shutting down through the GUI (top-left corner options) and the following commands:

• shutdown -P now
• shutdown -H now
• poweroff

Doesn't work.

I also tried some other things I saw around the internet:

• Installing laptop-mode-tools
• Turning WiFi adapter off (through the laptop keys, Fn+F3)
• Having something connected to the USB ports (I tried a USB flash drive)

None of them worked.

2

2 Answers

I solved by changing from 16.04.1 LTS amd64 to 16.10 amd64.

EDIT: By changing I mean downloading the 16.10 amd 64 OS image and installing it in the HD after formatting it.

1

After several hours trying to solve that, I was able to find a final solution to my Acer Aspire V5-471.

I have tried everything which user maviz tried in this topic with no results in Mint 18.2 64 bits (GRUB options, wake up in bios, wifi configuration, laptop-mode-tools, kernel update, etc). After a searching in usb issue, I just put that in /etc/rc.local before the existing last line exit 0:

for usb_ports in /sys/bus/usb/devices/usb?/power/control; do echo on > $usb_ports
done

It did the trick and I finally could shut down my computer!

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