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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1012277 Title: Closing laptop lid should not blank external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/1012277/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
