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@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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