I had observed the same bug on my Laptop Asus K40IN (graphics nvidia G102M). But I found a workaround: 1. Open in editor /etc/acpi/lid.sh and insert "exit 0" in the beginning of the script, to force exit on start. This script executes every time when you close or open the lid of your laptop. Then restart ubuntu, should help, but this didn't helped me when I first tried to do that. I'm not completely sure that this works.
2. Disable DPMS, you can read a lot of information about it here https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling . Both works on my laptop: Disable DPMS and prevent screen from blanking: xset -dpms; xset s off edit /etc/X11/xorg.conf and append in Monitor section Option "DPMS" "false" -- 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
