I have the same problem with my Dell D410, docking station, and a generic 15" external monitor. Initially the external monitor shows an "out of range" message but once signed in via the laptop screen, both screens are mirrored. Closing the laptop lid blanks both screens and I then can't get any display at all. Thus I then have to switch off with the power button and start all over again.
Trying to start up with the laptop lid closed and using the dock power button just shows the out of range message on the external monitor, so I have to start up with the lid open. I'm using Precise 12.04, upgraded from 11.10 and all updates installed. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/1012277 Title: Closing laptop lid should not blank external monitor Status in “gnome-power-manager” package in Ubuntu: Confirmed Bug description: I'm using Precise Pangolin installed from scratch, with the latest updates. txelu@txelu-acer:~$ lsb_release -rd Description: Ubuntu 12.04 LTS Release: 12.04 My problem is that I have my laptop connected to an external monitor, and if I started Ubuntu with the lid open I can't close, because not only the laptop screen goes blank, but also the external monitor. As a curious detail if I close the lid right after switching on the laptop, before Ubuntu starts up, it works as expected. Of course, I have set the Energy configuration to do nothing on closing the lid, and I agree that the laptop screen in that situation should go black, but not the external screen. There is a similar bug filled against previous versions of Ubuntu (#416236) that was considered a regression, but in that case there was a workaround using gconf-editor to manually edit the settings for the gnome-power-manager, but there is no such a entry now in 12.04. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/1012277/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
