Public bug reported:

When I close the lid on my laptop (HP EliteBook 5840w), laptop is not
suspended. Suspend in other use-cases works ok (e.g. when invoked from
system menu).

I've done some research and problem is, that gnome-settings daemon
thinks that there are active external outputs - in such case suspend is
skipped. Have a look at method do_lid_closed_action in gsd-power-
manager.c. This method uses gnome_rr_output_is_laptop method from gnome-
rr.c to find out, whether output is built-in or external. On my notebook
output->name is "default" and hence output is considered to be an
external one (even though there is no external output connected).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libgnome-desktop-3-2 3.3.91-0ubuntu1 [modified: 
usr/lib/libgnome-desktop-3.so.2.1.2]
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Sat Mar 10 12:46:14 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcEnviron:
 TERM=xterm
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-desktop3
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-desktop3 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/951479

Title:
  Laptop with nvidia binary drivers does not suspend when lid is closed

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