How to set up GRUB for vga mode?

EAD · 03-17-2006, 06:05 AM

hii, How can I set my to run my linux konsole in 1024x768 and 24 bits and 85 HZ? I am running KDE with 100HZ and want the same in command.
Please help me figure it out

Lenard · 03-17-2006, 07:03 AM

KDE is a GUI and konsole (part of KDE) is not the Linux console. With that said simply add something like vga=791 to the kernel line, example below;

kernel /vmlinuz-2.6.15.1 ro root=LABEL=/ quiet vga=791

And a table to use for other possible modes;

Code:

Colors | 640x480  800x600  1024x768 1280x1024
-------+-------------------------------------
256    |   769      771      773      775
32k    |   784      787      790      793
64k    |   785      788      791      794
16M    |   786      789      792      795

EAD · 03-17-2006, 10:38 AM

The problem is that my refresh rate is low, how to fix it up?
in KDE it 100HZ in Terminal (not X) its 60

Lenard · 03-17-2006, 11:40 AM

Recompile the kernel to support your video interface with vesa framebuffer support. This requires reading (lots of it), patching the kernel and maybe writing some code to patch the kernel with. Start by reading the vesafb.txt file nornally found in the Documentation/fb directory of your kernel source.

Here I'll save you a bit of time;

Code:

Refresh rates
=============

There is no way to change the vesafb video mode and/or timings after
booting linux.  If you are not happy with the 60 Hz refresh rate, you
have these options:

 * configure and load the DOS-Tools for your the graphics board (if
   available) and boot linux with loadlin.
 * use a native driver (matroxfb/atyfb) instead if vesafb.  If none
   is available, write a new one!
 * VBE 3.0 might work too.  I have neither a gfx board with VBE 3.0
   support nor the specs, so I have not checked this yet.

Good luck

EAD · 03-18-2006, 01:28 AM

What?
Is it that hard?
Why?

bigrigdriver · 03-18-2006, 10:20 AM

What distro are you using? If SUSE, from the Kde menu, select System -> Configuration -> SaX2, then configure to your hearts content.
Other distros should have similar tools.

EAD · 03-19-2006, 01:39 AM

amm I am using ARCH linux, any ideas?