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I'm on Kubuntu 14.04.3 on a ThinkPad X250.

I tried to configure what happens when I close my laptop lid or when I press my power button in the "Configure Energy Saving" dialog in the "System Settings". But no matter what I choose (Sleep, Turn Off screen, Lock Screen, Shutdown) nothing happens if I press the power button or close the laptop lid. It used to work on my ThinkPad X230.

I have a couple of "activities" that had custom settings for energy saving, but now I set them all to "Don't use special settings".

I'm aware of Power button in Lubuntu 13.10 will not suspend. I tried the solution but it did not work for me.

When I perform Sleep, Restart, Shut down, etc.from the launcher menu everything works fine. I can also perform these actions from the terminal using the shutdown command and I can suspend the machine using 'pm-suspend'.

Following this answer to a related question I added 

logger in /etc/acpi/powerbtn.sh, presumably "Power button pressed"

to /etc/acpi/powerbtn.sh. Now, if I do sudo /etc/acpi/powerbtn.sh an entry in /var/log/syslog is made. However, if I press the power button no entry is made, so I guess this script is not executed when I press the power button.

Following this question I made a script that prints out the value of

/proc/acpi/button/lid/LID/state

every second. Opposing to what was reported there the LID state is correctly detected.

I ran 'acpi_listen'. I get a message when closing and opening the lid:

button/lid LID close
button/lid LID open

However, I do not get a message when pressing the power button. So does that mean that the "closing the lid" and the "power button" problem are unrelated? I realized that in '/etc/acpi/' and '/etc/acpi/events' there seem to be no files handling lid close:

$ ls /etc/acpi/events/
asus-keyboard-backlight-down  asus-wireless-off  ibm-wireless   powerbtn       tosh-wireless
asus-keyboard-backlight-up    asus-wireless-on   lenovo-undock  thinkpad-cmos

$ ls /etc/acpi/
asus-keyboard-backlight.sh  asus-wireless.sh  events  ibm-wireless.sh  powerbtn.sh  tosh-wireless.sh  undock.sh

I also run Windows on the same machine and there the power button and closing the lid works normally, so it cannot be a mechanical defect.

Any ideas how I can make my Laptop go to sleep when I press the power button or close the laptop lid?

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    Possible duplicate of Power button in Lubuntu 13.10 will not suspend
    – Daniel
    Oct 6, 2015 at 20:31
  • @Daniel 2 Completely different issues.
    – David
    Oct 6, 2015 at 20:50
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    @Fabian Rost please Edit your question with the result of sudo shutdown now in your terminal. I do realize that this isn't sleep.
    – David
    Oct 6, 2015 at 20:51
  • @Daniel, I tried the proposed solution from Power button in Lubuntu 13.10 will not suspend and as David Cole just pointed out it doesn't work.
    – Fabian Rost
    Oct 6, 2015 at 20:56
  • OK. Have you tried sudo shutdown now like David suggested?
    – Daniel
    Oct 6, 2015 at 20:58

1 Answer 1

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I upgraded to Kubuntu 15.10. Now, closing the laptop lid is correctly handled (the action I select in the System Settings of KDE is performed).

However, the power button is not yet functional.

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