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dumpreg(1)                    Svgalib User Manual                   dumpreg(1)

       dumpreg - dump the state of the card as the svgalib chipset driver sees it.

       dumpreg < /dev/ttyN

       The chipset drivers of svgalib inquire the mode of the graphic card when the application is started and restore
       it when the svgalib application quits.  dumpreg prints this information to stdout.

       This is useful for debugging or adding modes to a device driver. For example you can use  Xfree86  to  setup  a
       given mode timing, then run dumpreg and use it's stdout to make your chipset driver use exactly this timing.

       However,  the recent change of svgalib to hunt an own free virtual console does not allow this, because it will
       make Xfree86 return to textmode first. You can avoid this by using the second form where N is the number of the
       virtual console on which Xfree86 runs (usually 7) as root.

       svgalib(7),   vgagl(7),   libvga.config(5),   vga_dumpregs(3),   convfont(1),   fix132x43(1),   restorefont(1),
       restorepalette(1), restoretextmode(1), runx(1), savetextmode(1), setmclk(1), textmode(1).

       This manual page was edited by Michael Weller <>. The exact source  of  the  refer-
       enced utility 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 <>.

       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)               2 Aug 1997                        dumpreg(1)