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I'm running Ubuntu 12.10 on my ThinkPad T500 with an extra monitor.

$ uname -a
Linux emre-laptop 3.5.0-25-generic #38-Ubuntu SMP Mon Feb 18 23:28:26 UTC 2013 i686 i686 i686 GNU/Linux

The pm-suspend command works perfectly from the command line, Fn+F4 (usual sleep key combination) works fine, and clicking 'Suspend' from the GUI works without any problems:

Suspend works fine when invoked from GUI

I have also checked my settings, they seem to be fine:

Suspend settings

But the suspend functionality doesn't work when the laptop is closed. When I close the lid the external monitor goes blank, but the laptop does not go into sleep mode. When I open the lid I have a blank screen both on the laptop and the external monitor.

I have tried the workaround given at and created a file:

$ ls -l /etc/acpi/local/ 
-rwxr-xr-x 1 root root 696 Feb 26 20:31 /etc/acpi/local/

The contents of the file:

grep -q closed /proc/acpi/button/lid/*/state
if [ $? = 0 ]

Any suggestions or workarounds?

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up vote 1 down vote accepted

Well, apparently one needs to be more careful with filenames! In my case, I have inadvertently created the wrong file: /etc/acpi/local/ whereas the correct filename should have been:


as was described correctly in the workaround. Renaming the file correctly solved the suspending problem.

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