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[carlosv <863834@xxxxxxxxxxxxxxxxxx>]

Hi there, same problem here.
I have switchable graphics HP tm2 Intel/ATI graphic cards.
Closing the lid worked OK on Natty, just upgraded to Oneric, doesn’t work. When I close the lid just turn the screen off. 
Now, I don't think is a problem with kernel, drivers, etc. because the function suspends works on both graphic cards if it is done on the menu. But suspend doesn’t work if you close the lid. So it is a problem with the function on this distribution of Ubuntu.
Hope to see it fix soon.

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https://bugs.launchpad.net/bugs/863834

Title:
  [regression] Suspend on lid close broken on Oneiric

Status in “gnome-power-manager” package in Ubuntu:
  Confirmed

Bug description:
  With Oneiric, I cannot have my laptop go into suspend mode by closing the lid anymore. In the gnome settings, the lid close action is configured to suspend (both on AC and on battery), but closing the lid does nothing. 
  Here is the output of "acpid -d" when I close the lid:
  No protocol specified
  xset:  unable to open display ":0"

  And here it what it says when I open the lid:
  Sessions still open, not unmounting

  Here is the output of acpi_listen when I close/open the lid:
  button/lid LID0 00000080 00000009
  button/lid LID0 00000080 0000000a

  Here is what /proc/acpi says with the lid open and closed:
  gpothier@tadzim:~$ cat /proc/acpi/button/lid/*/state
  state:      open
  gpothier@tadzim:~$ cat /proc/acpi/button/lid/*/state
  state:      closed

  Suspending in itself works fine with the laptop's suspend button.

  Suspend on lid close worked fine in Natty.

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