I have a Dell Inspiron 6000 with Intel Centrino (Pentium-M), 32bit. ATI
X300 graphics.

I updated my system from karmic to lucid. Using jaunty, it was very very
seldom that suspend to ram did not work. Same behaviour with lucid.
System was updated frequently.

Since I installed  a kernel update from 2.6.32-23 to 2.6.32-24 in the
last days, I can't suspend to ram or hibernate reproducably. The system
halts before it sleeps or is switched off. I have to switch the system
off and on again. After rebooting, all network connections are switched
off and I have to reenable them using NetworkManager.

Using 2.6.32-23, I also can't suspend to ram or hibernate any more. A
few days ago, this worked fine in most cases. However sometimes I had
the same behaviour as now (about one in 10 times it did not suspend).

When I reboot my system using kernel 2.6.32-22, suspend to ram and
hibernate work fine. Reproducably.

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laptop halts while it should go to sleep
https://bugs.launchpad.net/bugs/620842
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