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I have installed Xubuntu 11.10 on a Compaq Presario P4. I am using it headlessly, to serve files. So the way I can turn off the box is by pressing the power button once. But it refuses to do it. Any advice?

I have configured in the SETTINGS MANAGER => POWER MANAGER so as to effect a shutdown on pressing the power button. I have also checked in the SETTINGS EDITOR that property "xfce4-power-manager => power-button-action" takes value of 4.

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  • Have you seen this post? The problem posed is similar to your question, and even has the same desktop environment and shutdown action. – somoso Oct 24 '11 at 8:06
  • Interestingly, I found the solution in wiki section of Archlinux. And it worked like magic, except I feel the boot time has marginally increased – tadatma Oct 24 '11 at 16:34
  • @tadatma please add that your solution as an answer, thanks. :) – jrg Oct 24 '11 at 16:37
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So instead of tadatma I am writing the solution from (archlinux wiki first solution down here:

Create a file in /etc/acpi/events/ named powerbtn

gksudo gedit /etc/acpi/events/powerbtn

with following content: 

# /etc/acpi/events/power
# This is called when the user presses the power button
event=button/power (PWR.||PBTN)
action=/sbin/poweroff

Restart acpid

sudo service acpid restart

This works for ubuntu 11.10 here.

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