Comment 14 for bug 274938

The problem seems to lie deeper. Try the following:

$ cat /proc/acpi/button/lid/LID0/state
state: open

Should read open.
Close the lid.
System suspends.
Open the lid, press power button.
System resumes.

$ cat /proc/acpi/button/lid/LID0/state
state: closed

I guess the problem is that the lid is opened while in suspend and hence the state becomes corrupt.