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The power button on my headless 11.10 server appears to do nothing unless I hold it in for 5 seconds or so, in which case it switches the machine off instantly.

What I'd like it to do if I press it briefly is a normal shutdown (shutdown -P now). How can I allow this?

I have seen this question but it is for desktop installations.

2

I believe you might need acpi-support. Check out the links below for more info on how to manipulate the power button press event.

http://blog.metalight.dk/2010/07/ubuntu-lucid-custom-power-button-event/

http://test.z13media.com/2010/03/disable-power-button-on-ubuntu-server.html

  • I don't have an /etc/acpi/ directory, even after running sudo apt-get install acpi. Or am I supposed to just create it myself? – Kent Boogaart Oct 27 '11 at 18:28
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    That's because you need the 'acpi-support' package, as said above. Don't think any of the acpi related ones are included in the server edition. – mikewhatever Oct 27 '11 at 18:34
  • Perfect - thanks. Sorry, I misread your post initially. – Kent Boogaart Oct 27 '11 at 19:33
  • Glad I could help. :) – mikewhatever Oct 27 '11 at 19:45
  • @mikewhatever I presume you've implemented this power off feature. Does the server ask for user passwords or any such question or does it jsut shutdown directly? – itsols Feb 1 '13 at 12:31
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You just need to install acpid package (sudo apt-get install acpid), its just one package, nothing more and it will handle all powerbutton events (acpi-support contains more additional packages). Tested on ubuntu server 11.10

https://lists.ubuntu.com/archives/ubuntu-users/2011-November/253766.html

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