请问如何设置字符终端下的显示模式（分辨率和扫描频率）

我使用的是rh9，默认安装后启动后分辨率太低（800*600），听人说在grub引导时给kernel传递一个参数vga=792使分辨率为1024*786，但是扫描频率只有75Hz，屏幕抖动厉害。请问如何提高分辨率又不抖动？好像用fbset这个命令吧？不知怎么用。另外，vga=792到底是什么意思？

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    | 640x480  800x600  1024x768 1280x1024
----+-------------------------------------
256 |  0x301    0x303    0x305    0x307   
32k |  0x310    0x313    0x316    0x319   
64k |  0x311    0x314    0x317    0x31A   
16M |  0x312    0x315    0x318    0x31B   
[/code:1]
[code:1]
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.
[/code:1]
http://dev.gentoo.org/~spock/projects/vesafb-tng/ 这里是vesa3.0的补丁

谢谢。现在问题解决了