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Re: Where did my penguins go?



g wrote:
Richard Shaw wrote:

try adding a VESA mode, something like "vga=..." I'm not
sure what resolution you want to run but try "vga=ask" the first time
and pick the one you like the most. If you're happy with it change the
parameter to "vga=0x<mode>". I found out the hard way that you need to
put "0x" on the front of whichever mode you choose.

either a hex value or a decimal value may be passed.

"0x" is used if you pass a hex value, else value passed will be taken as
being a decimal value.

It's not *quite* that simple, that the way it works on the command line passed to the kernel. However, if you use VGA=ask, those numbers are hex and 0x is neither needed nor accepted.Ste 300

some basic resolution codes, in decimal, are:

colors  bits  640x480  800×600  1024×768  1152×864 1280×1024  1600×1200
   256    8   vga=769  vga=771   vga=773   vga=353   vga=775    vga=796
  32K0        vga=784  vga=787   vga=790   vga=354   vga=793    vga=797
  65K0   16   vga=785  vga=788   vga=791   vga=355   vga=794    vga=798
  16M7   24   vga=786  vga=789   vga=792   vga=795   vga=799


this page has charts for passing hex values with a few decimal thrown in;

   http://wiki.antlinux.com/pmwiki.php?n=HowTos.VgaModes


if you have "kernel source package" installed, you should find info in;

  /usr/src/linux/Documentation/fb/vesafb.txt

In addition, with recent kernels, you have to start doing anything interesting with "nomodeset" before you can use vga= or it's useful friends video= and xdriver=

Example of everything all at once, use vesa and see penguins:
  nomodeset vga=0x318 video=vesafb xdriver=vesa

This allows you to use alternate framebuffer and X drivers, and trade the high performance and low reliability of some modern kernel drivers for the slow stability of vesa.

--
Bill Davidsen <davidsen tmr com>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot



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