Man

Command Section
vga_screenoff(3)              Svgalib User Manual             vga_screenoff(3)

NAME
       vga_screenoff, vga_screenon - turn generation of the video signal on or
       off

SYNOPSIS
       #include <vga.h>

       int vga_screenoff(void);
       int vga_screenon(void);

DESCRIPTION
       The functions turn the generation of the video signal on or off. On
       some video boards, SVGA memory access is faster when no video signal is
       generated. On the other hand, not all boards allow to disable it (at
       least not in all modes).

       The functions always return 0 (on which you should probably not really
       rely).

SEE ALSO
       svgalib(7), vgagl(7), libvga.config(5), vga_init(3), vga_setmode(3),
       vga_clear(3),

AUTHOR
       This manual page was edited by Michael Weller <[email protected]
       essen.de>. The exact source of the referenced function as well as of
       the original documentation is unknown.

       It is very likely that both are at least to some extent are due to Harm
       Hanemaayer <[email protected]>.

       Occasionally this might be wrong. I hereby asked to be excused by the
       original author and will happily accept any additions or corrections to
       this first version of the svgalib manual.

Svgalib (>= 1.2.11)              27 July 1997                 vga_screenoff(3)
Command Section