Command line:

Usage: 

    lcdtest [options]

Options: 

    --help         get list of command keys
    --list-modes   list available video resolutions
    --window       display in a window rather than full screen
    -x <count>     use a video mode with the specified horizontal resolution
    -y <count>     use a video mode with the specified vertical resolution
Keyboard commands:

Upon startup, lcdtest will fill the screen with solid red. Pressing keys on the keyboard will change the pattern: Change foreground color: 
	r 	red 
	g 	green 
	b 	blue 
	w 	white 
	k 	black 

Change pattern: 
	s 	solid fill 
	h 	horizontal lines 
	v 	vertical lines 
	c 	crosshatch 
	d 	dots 
	a 	white vertical lines with two pixel pitch 

Line position/spacing 
	arrows 	move lines in arrow direction 
	plus 	increase spacing between lines 
	minus 	increase spacing between lines 
	0..9 	select predefined line spacings 

Other: 
	/ or ? 	toggle display of help message 
	q or escape 	exit program 


The "a" command is specifically intended for use with LCD monitors connected via an analog VGA (vs. DVI). This pattern should work well for the monitor auto-setup feature. Auto-setup may not get the frequency and phase adjusted optimally, in which case this pattern is also useful for manual adjustment.