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Kernel Configuration Options

The following kernel configuration options (see config(8)) can be used to control the vga driver. These options provide compatibility with certain VGA cards.

VGA_DEBUG=N

Set the VGA support debug level to N. The default value is 0, which suppresses all debugging output. A value of 2 gives maximum verbosity.

VGA_KEEP_POWERON_MODE

This option keeps the initial mode's register settings for switching back to it from another mode.

VGA_WIDTH90

This option enables 90 column modes: 90x25, 90x30, 90x43, 90x50, 90x60. These modes are not always supported by the video card and the display. It is highly likely that LCD display cannot work with these modes.

The following options will remove some features from the vga driver and save kernel memory.

VGA_NO_FONT_LOADING

This option removes font loading from the driver. Note that if you use this option and still wish to use the mouse on the console then you must also use the SC_ALT_MOUSE_IMAGE option. See syscons(4).

VGA_NO_MODE_CHANGE

This option prevents the driver from changing video modes.