Excuse me if this has been answered already, but I couldn't find any questions quite matching my issue.
On the odd occasion, usually after incorrectly restarting my computer, my login screen resolution is not the default 1440x900, but I think 1600x900. Now, I have this monitor that's really bad at handling resolutions it's not designed to handle, and will show a silly "wrong resolution" box jumping around the screen.
Is there any way to make the login screen load a 1440x900 resolution no matter what? I'm running Ubuntu 11.10 with Unity and LightDM.