默认kernel给的tty分辨率是非常有限的,解决的方法就是给kernel传递VGA参数。
1、lilo下设置方法
lilo:linux vga=318
将会启动1024x768x24bpp模式。下面是常用分辨率+色彩所对应的编码
注: bpp(bit per pixel) 每一个点的"色彩丰富程度"
色彩 |
640x400 |
640x480 |
800x600 |
1024x768 |
1280x1024 |
1600x1200 |
4bits |
? |
? |
0x302 |
? |
? |
? |
8bits |
0x300 |
0x301 |
0x303 |
0x305 |
0x307 |
0x31C |
15bits |
? |
0x310 |
0x313 |
0x316 |
0x319 |
0x31D |
16bits |
? |
0x311 |
0x314 |
0x317 |
0x31A |
0x31E |
24bits |
? |
0x312 |
0x315 |
0x318 |
0x31B |
0x31F |
32bits |
? |
? |
? |
? |
? |
? |
如果要默认就设置为1024x768x24bpp模式,可以修改/etc/lilo.conf,加入一下语句:
vga=0x318
然后保存退出,重启即可。
2、GRUB下设置方法
就是在grub.conf启动列表的kernel最后添加vga参数,例如将tty分辨率设置为(800x600x65536)
cat /etc/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/sda3 # initrd /initrd-version.img #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Red Hat Enterprise Linux AS (2.6.9-22.EL) root (hd0,0) kernel /vmlinuz-2.6.9-22.EL ro root=LABEL=/ vga=788 initrd /initrd-2.6.9-22.EL.img
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以下是常用参数列表
linux video=vga16 (640x480x16) <---默认参数,支持最普通的硬件:) vga=769 (640x480x256) vga=771 (800x600x256) vga=788 (800x600x645536) vga=773 (1024x768x256) vga=791 (1024x768x65536) |
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