natty/unity: Closing laptop lid should not blank external monitor

Binary package hint: gnome-power-manager

At work, I have a laptop dock (for my Lenovo Thinkpad T410s) with two external monitors connected and AC power cord connected. When I dock the laptop, the laptop's screen turns off and only the two external monitors are used. I would like to be able to dock my laptop and close the lid, but that also blanks screen.

The Power Management Preferences dialog gives only the choices of "Blank screen", "Suspend" and "Shutdown" when the laptop lid is closed. It would be nice to have a way to say "do nothing".

Even better would be for the power manager to realize that external screens are in use and not blank the screen in that case only, if the lid close action is set to "blank screen".

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-power-manager 2.32.0-2ubuntu1
Uname: Linux 2.6.38-999-generic x86_64
Architecture: amd64
Date: Wed Feb 2 11:27:45 2011
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101206)
MachineType: LENOVO 2901CTO
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-999-generic root=UUID=ab1e5491-e40c-4113-bf20-22ecb604999a ro quiet splash vt.handoff=7
SourcePackage: gnome-power-manager
dmi.bios.date: 10/27/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6UET61WW (1.41 )
dmi.board.name: 2901CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6UET61WW(1.41):bd10/27/2010:svnLENOVO:pn2901CTO:pvrThinkPadT410s:rvnLENOVO:rn2901CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2901CTO
dmi.product.version: ThinkPad T410s
dmi.sys.vendor: LENOVO