I confirm this: Edgy up to date has the same problem for a Thinkpad T60.

The sleep and hibernate sometimes work, and most times don't. Rather
inconsistently. I have noticed that sometimes my swap partition is not
on at all, I have to manually go to gparted and right-click and
"swapon". Then 'top' correctly reports the swap. It's weird that in
dmesg it says:

[17179653.888000] Adding 4425868k swap on /dev/sda7.  Priority:-1
extents:1 across:4425868k

and later on in the boot messages I see that "mounting swap partition"
reports "ok". But the swap is never on.

Even when manually activating swap, sleep and hibernate fail most of the
time.

In thinkwiki.org there is a user reporting that disabling the powernowd
(which controls CPU frequency scaling) allows for sleep to work. I've
tried, and results are the same or worse: sleep works very little times.


A related issue is that when sleep works, sometimes it takes about 5 seconds, 
and most others something like 30 seconds. Independenlty of the number of open 
programs.

This little bug (when compared to an entire OS) makes ubuntu look very
bad.

-- 
acpid: sleep and suspend no longer work in Edgy
https://launchpad.net/bugs/61405

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