[Description] GVidChanger-minimal (gvidm) is a GTK app to  quickly and easily change video resolutions in X.  Running it will pop up a list of available modes;  upon choosing a mode or cancelling, it exits. If you  are running dual or multi-head displays, it will give  you a list of screens so you can select the  appropriate one.
You can also specify on the command line a mode to switch to immediately, or a list of modes to choose from.
[Homepage] http://www.dakotacom.net/~donut/programs/gvidm.html
