Public bug reported:

In 9.10 this was never an issue
In 10.04 it might have happened, but I did not recognize this as an issue.
In 10.10 its a regular issue:

Power Manager set to suspend to RAM when lid is closed.
After reboot, this setting is neglected
After once suspending via menu (Suspend) and waking up, closing the lid brings 
the machine into sleep mode.

This happens only on my HP 8510w. On the HP nx8220 and HP510 sleep works
any time.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-23-generic 2.6.35-23.37
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-23.37-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  wolf       2292 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xe8044000 irq 47'
   Mixer name   : 'Analog Devices AD1981'
   Components   : 'HDA:11d41981,103c30c5,00100200 
HDA:14f12c06,103c1379,00100000'
   Controls      : 11
   Simple ctrls  : 9
Date: Thu Nov 18 18:59:28 2010
HibernationDevice: RESUME=UUID=53050abd-495d-47ae-bc98-3341c417e531
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate amd64 
(20091020.3)
MachineType: Hewlett-Packard HP Compaq 8510w
PccardctlStatus:
 Socket 0:
   no card
 Socket 1:
   3.3V 16-bit PC Card
   Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-23-generic 
root=UUID=b921775a-49a7-48e8-985e-1907bc29f71e ro vga=792 splash quiet quiet 
splash
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 07/25/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68MVD Ver. F.05
dmi.board.name: 30C5
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.32
dmi.chassis.asset.tag: CNU7402CLM
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68MVDVer.F.05:bd07/25/2007:svnHewlett-Packard:pnHPCompaq8510w:pvrF.05:rvnHewlett-Packard:rn30C5:rvrKBCVersion71.32:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 8510w
dmi.product.version: F.05
dmi.sys.vendor: Hewlett-Packard

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug kernel-power maverick needs-upstream-testing 
regression-release resume suspend

-- 
suspend to ram does not work after reboot
https://bugs.launchpad.net/bugs/677118
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