I came across it here:
http://ubuntuforums.org/showthread.p...40#post3038240
Get your favorite text editor ready. Open up the /etc/default/acpi-support file.
Code:
nano /etc/default/acpi-support
Scroll down and change
to
Please note the period. It is important that you put it there.
Suspend now works on my Kubuntu machine.