Thinkpad X61s goes back to sleep when resuming from suspend

[Martin Pool]

  affects /ubuntu/linux

I'm using
Linux lithe 2.6.28-4-generic #9-Ubuntu SMP Tue Jan 6 19:34:01 UTC 2009 i686 GNU/Linux
from Jaunty, and have just encountered this new problem that was not
present last week.

I put the machine into suspend, and then when I opened the case the
screen turned on, the gdm unlock dialog came up briefly, and then the
machine went back to sleep. I pressed the Fn key to wake it up and the
same thing happened again. This repeated several times until it finally
woke up and stayed awake. At that point I saw the gdm password field
was full of about 40 characters. I could then unlock the screen and
continue using my session.

I put the machine to sleep again and the same problem recurred.

--
Martin <http://launchpad.net/~mbp>

[Martin Pool (mbp)]

This is happening every time I suspend the laptop, though the number of
times I have to wake it before it sticks varies. It's typically around
three times.

--
Martin <http://launchpad.net/~mbp>

[Martin Pool (mbp)]

Still happening with today's Jaunty and "Linux lithe 2.6.28-4-generic #11-Ubuntu SMP Fri Jan 16 21:57:57 UTC 2009 i686 GNU/Linux"

[Martin Pool (mbp)]

(previous comment not to be whiny, just to avoid roundtrips asking for reconfirmation)

[Timo Aaltonen (tjaalton)]

same thing on my X61. It's not every time though, the "success" rate is maybe 75%.

[Timo Aaltonen (tjaalton)]

Let me clarify a bit. It only goes back to sleep once, then after waking it up with Fn it stays up.

[Andy Whitcroft (apw)]

@Martin, @Timo -- can you confirm how you suspended the latop in this case? Did you use the FN-suspend key or click on the user-switcher and ask it to suspend. Whichever you do use could you test the other and report back here.

[Timo Aaltonen (tjaalton)]

I normally use the keys, so when I tried the menu a couple of times it didn't fail.

[Martin Pool (mbp)]

I can confirm this only happens when I suspend using the keys, not
when I suspend from the menu or by closing the lid.

[Andy Whitcroft (apw)]

bug #318466 seems to show similar symtoms and likely duplicate of this.

[Andy Whitcroft (apw)]

This seems to be identicle to the behaviour already reported in bug #306310, marking this a duplicate of that.