Under Ubuntu Gnome 14.04, Gnome 3.12, I'm running with a different from my maximum resolution. After login, the resolution is set fine, and when I log in after locking the machine, the resolution is fine.
After reboot or ask to change user, the resolution changes, making things jump around. I would like to fix that.
How can I change the resolution for the initial login screen, or change the resolution system wide?
xrandr --output eDP1 --primary --mode 1920X1080
but that didn't work. It had an effect, but it didn't work.