怎样设置Framebuffer

环境：Redhat9.02

启动级别：3

配置内核：

首先要再编译内核是选中如下几项：

Code maturity level options --->[*] Prompt for development and/or incomplete code/drivers
Processor type and features --->[*] MTRR (Memory Type Range Register) support
Block Devices ->[*] Loopback device support[*] RAM disk support
(4096) Default RAM disk size[*] Initial RAM disk (initrd) support
Console Drivers ->[*] VGA text console[*] Videomode selection support
Console Drivers -> Frame-buffer support ->[*] Support for frame buffer devices[*] VESA VGA graphics console[*] Use splash screen instead of boot logo 

配置Bootloader

Grub

修改/etc/grub.conf，在kernel项的最后添加vga参数和fb，例如：

kernel  /boot/vmlinuz-2.4.20-8 ro root=LABEL=/  vga=0x311 fb:on

LILO

修改/etc/lilo.conf，添加vga参数，例如：

vga=0x311

修改后执行lilo命令，写入bootloader。

vga参数的可选值如下：

Depth	640x400	640x480	800x600	1024x768	1152x864	1280x1024	1600x1200
4 bits	?	?	0x302	?	?	?	?
8 bits	0x300	0x301	0x303	0x305	0x161	0x307	0x31C
15 bits	?	0x310	0x313	0x316	0x162	0x319	0x31D
16 bits	?	0x311	0x314	0x317	0x163	0x31A	0x31E
24 bits	?	0x312	0x315	0x318	?	0x31B	0x31F
32 bits	?	?	?	?	0x164	?	?

修改后重启系统，会在右上角看到一个Linux的企鹅Logo。