After two days of installation, strangely my Ubuntu machine is restarting instead of shutdown from both desktop GUI and command line.
sudo shutdown -h now
sudo halt # (doesn't shutdown, instead freezes on boot screen Plymouth)
I had force shutdown by powering off the machine.
This is not happening all the times.
I have been using Ubuntu for 6 months and never experienced this kind of problem.
Go into your machines BIOS and check for an option called wake-on-lan or something similar and disable it.
This was what caused this problem on my machine.
I faced the same issue after I installed Ubuntu 12.04 on a newly built machine. This answer on another post helped me resolve it:
I resolved by adding acpi=noirq to the kernel arguments
sudo editor /etc/default/grub
Add
GRUB_CMDLINE_LINUX_DEFAULT="acpi=noirq quiet splash"
Then
sudo update-grub
In my case it was a Wake On Lan motherboard (Gigabyte GA-Z77M-D3H) issue.
My solution:
Install ethtool:
sudo apt-get install ethtool
Set WOL off:
sudo ethtool -s eth0 wol d
If it works, then edit the /etc/rc.local file and add ethtool -s eth0 wol d, before the exit 0 line.
Hope it will help you.
I have had exactly the same problem on my Acer V5-571G: the laptop shuts down, turns off its power LED, and then starts again after a few seconds. It occurs more often when working on battery.
The problem seems to arise from incorrect work of pm-utils. But if you write on into /sys/bus/*/devices/*/power/control, the kernel takes control over power management at the specified devices - and somehow this makes the hardware to shut down correctly.
So I have written a script:
#!/bin/bash
case "$1" in
stop) for i in /sys/bus/*/devices/*/power/control ; do echo on > $i ; done
;;
esac
exit 0
and to make it being executed every time before shutdown I've placed it under name K32power-control-on into /etc/rc0.d directory (don't forget to make the script executable, sudo chmod +x K32power-control-on). After that the laptop shuts down ok.
I think that there are only a few buses/devices which need to have 'on' value written to their power/control, so the list of devices in the script can be restricted, but I just didn't investigate further.
UPD: Here is a more refined solution of the same problem: https://www.behnke.io/fedora-17-on-an-aspire-v5-571-reboot-on-shutdown/
I had this problem on a Thinkpad X230 with Ubuntu 12.04, it always rebooted after shutdown when unplugged. I found the solution described here to work for me:
Install laptop-mode-tools (if it's not already installed):
sudo apt-get install laptop-mode-tools
Open grub's config in /etc/default/grub in a text editor and add (or change) this line:
GRUB_CMDLINE_LINUX_DEFAULT="acpi=noirq quiet splash"
Update grub using the following command:
sudo update-grub
Don't follow the recommendation that says to set
GRUB_CMDLINE_LINUX_DEFAULT="acpi=noirq quiet splash"
unless you know how to repair a broken Ubuntu system!
It seems that
sudo shutdown -P now
works every time! Note -P not -h
For me I thought it was rebooting but it was just asking to decrypt so it can install updates before turning off. I could not even force it to shutdown - got lucky there :)
my solution:
example:
lspci found rt3290 wlan
rt3290 use rt2800pci module
blacklist rt2800pci
edit blacklist.conf
sudo nano /etc/modprobe.d/blacklist.conf
Add the line:
blacklist rt2800pci
reboot linux
test shutdown :)
install wlan usb adapter
RT2870/RT3070 work :)
In my case (Gigabyte H87N-WIFI) I disabled XHCI in BIOS - so I can still use WOL. I suspect a problem with the xhci_hcd kernel module.
