lucid regression: suspend to RAM broken on HP Compaq 6710b

- works with Karmic kernel: 2.6.31-21.59
- does not work with Lucid kernel: 2.6.32-22.33
- Ubuntu's mainline kernel works however is broken in a different way: 2.6.34-999.201005231006

When using Lucid's Kernel 2.6.32-22.33, then one of the following things happen when I suspend either through the menu or by closing the lid:

* the laptop starts to suspend, locks the screen, works for a while and nothing
  happens and I have to unlock the screen to get back to the desktop

* the laptop will blank the screen but the power leds will stay on, as if the
  laptop was on, however the fan is not working, suggesting that the
  laptop is actually off

* the laptop will blank the screen but will stay on. Since I couldn't figure out how
  to make it light on the screen again I had to shut it down.

I checked the dmesg and kern.log logs but couldn't find anything conclusive in there.

Ubuntu's mainline kernel: 2.6.34-999.201005231006 is even weirder:

When I boot into it, the only thing I shortly see is "Starting Up..." and then the screen goes blank and stays that way. The fan goes to max and the air coming out becomes really hot.Then since apparently the bootup process is telling me that it can't mount some non-automount partition i press "S" and the boot continues. Out of the blue the login appears. I log in and I see that udevd is turning at 100% CPU.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
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: tpo 2640 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xe4804000 irq 16'
   Mixer name : 'Analog Devices AD1981'
   Components : 'HDA:11d41981,103c30c0,00100200 HDA:11c11040,103c1378,00100200'
   Controls : 12
   Simple ctrls : 10
Date: Mon May 24 11:01:02 2010
HibernationDevice: RESUME=UUID=17333b30-576f-4822-85e6-697cde92fe04
MachineType: Hewlett-Packard HP Compaq 6710b (GB893ET#UUZ)
ProcCmdLine: root=UUID=17333b30-576f-4822-85e6-697cde92fe04 ro quiet splash
ProcEnviron:
 LANGUAGE=de_CH:de
 PATH=(custom, user)
 LANG=de_CH.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
SourcePackage: linux
WpaSupplicantLog:

dmi.bios.date: 01/11/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68DDU Ver. F.10
dmi.board.name: 30C0
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.2E
dmi.chassis.asset.tag: CNU8032Z2G
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68DDUVer.F.10:bd01/11/2008:svnHewlett-Packard:pnHPCompaq6710b(GB893ET#UUZ):pvrF.10:rvnHewlett-Packard:rn30C0:rvrKBCVersion71.2E:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6710b (GB893ET#UUZ)
dmi.product.version: F.10
dmi.sys.vendor: Hewlett-Packard