Public bug reported:

Clean Installed Ubuntu 10.04 AMD64
ACPI related issues:
Laptop does not respond to AC power removed.
Laptop does not respond to lid closure.
Laptop does not respond to sleep shortcut key (Fn+F4) 
Laptop does not respond to pressing the power button

executed:
sudo acpi_listen
[tried unplugging ac - no event,
tried closing then opening laptop lid - no event,
tried fn+brightness down/up - worked and received the following event...] 
video LCD 00000086 00000000
video LCD 00000087 00000000

Checked the following, which appears to be correct:
g...@glyn-laptop:~$ cat /proc/acpi/button/lid/LID0/state
state:      open
[then close the lid enough so that backlight turned off]
g...@glyn-laptop:~$ cat /proc/acpi/button/lid/LID0/state
state:      closed.

Additional information:
I can suspend the laptop via the GUI menu option. The laptop suspends OK, 
closing then opening the lid does not resume the laptop. Pressing the power 
button does not resume the laptop. Pressing the Fn+F4 does resume the laptop 
successfully.

Tried 10.04 AMD64 live cd - exactly the same issues.

Tried 9.10 AMD64 live cd - Everything works perfectly.


tried upgrading to lucid-proposed to see if fixed by performing the following:

Added to /etc/apt/sources.list
deb http://nl.archive.ubuntu.com/ubuntu/ lucid-proposed restricted main 
multiverse universe
and performed
apt-get -t lucid-proposed update
apt-get -t lucid-proposed upgrade 

No change. All issues still present.

executed:
sudo acpi_listen
[tried unplugging ac - no event,
tried closing then opening laptop lid - no event,
tried fn+brightness down/up - worked and received the following event...] 
video LCD 00000086 00000000
video LCD 00000087 00000000

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: acpi (not installed)
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Mon May  3 22:41:22 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: acpi

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

-- 
No ACPI events for laptop lid or ac disconnect
https://bugs.launchpad.net/bugs/574802
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