Public bug reported:
Problem:
I want to use an external monitor only. The laptop should be stored somewhere
with the lid closed. But whatever I try the external screen tuns blank when I
close the lid of the laptop.
Setup
Ubuntu 12.04, Nvidia drivers installed, using xorg.conf settings to have only
my external monitor activated on boot.
Tested solutions
Energy-settings -> When lid closed: do nothing
Brightness and Lock Screen: Don't turn of screen and don't block (yes I
want it that way)
gconftool-2 --type string --set /apps/gnome-power-manager/buttons/lid_ac
"nothing"
edit /etc/acpi/events/lidbtn and comment out line 5 (action line)
remove (after editing had no effect) /etc/acpi/lid.sh
My interpretation of the problem:
As I am using the nvidia driver (and it seems I must as noveau
apparently doesn't recognize my external screen) unity is unaware that I
actually have an external screen attached. And though via xorg.conf my
primary (laptop) screen is disabled unity will no matter what I do
disable my screen because it still thinks it is the laptop screen.
Thanks for your feedback. If I can provide additional information to
support you in the solution of this problem let me know.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1015796
Title:
External Screen on Laptop with Nvidia driver and lid closed ->
Backlight allways off on external screen
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