Provided by: svgalib-bin_1.4.3-31_amd64 bug


       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 referenced 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