I'm running a home server on my old laptop (atom cpu).
I installed ubuntu 12.04 server edition, but I also installed ubuntu-desktop.
So, when I turn it on, ubuntu desktop is shown.
I sometimes use GUI, but I want to turn the ubuntu-desktop (gnome-desktop) off when I don't use it.
I think I can save resources by turning off the GUI.
It's necessary since my laptop's performance is not very good and it often becomes very hot.
I guess I can run ubuntu-desktop on my terminal with "startx" command.
But, I don't know how to turn the X window off for a moment.
Anybody have an idea?
Thanks in advance.
— Following is written after I chose the answer.
$ sudo stop lightdm
lightdm stop/waiting
with this command, I can turn off the x window. But, I can't get tty1 on my laptop.
I put that command from outside with ssh connection.
And, I can turn the x window on outside.
X: user not authorized to run the X server, aborting.
xinit: server error
But, I can get it back with start lightdm command.
$ sudo start lightdm
lightdm start/running, process 5673
I'm not sure this is good or not.
And I don't know I can save my resources when I stop lightdm.
Best Answer
To control the X environment, use
sudo service gdm stopandsudo service gdm startonce the system has booted up. To make permanent changes, you need to update the runlevel at which ubuntu auto-startsgdm(Gnome Desktop Manager), and set it to not start on boot up. You should be able to run these commands from an SSH shell remotely.