Enabling Linux to boot with framebuffer enabled for various screen resolutions
Steps[]
for Grub
- Change in the file /boot/grub/menu.lst or /boot/grub/grub.conf the line from
- kernel /vmlinuz-2.6.xx-x-xx root=/dev/hdaX ro
- to
- kernel /vmlinuz-2.6.xx-x-xx root=/dev/hdaX ro video=vesafb:ywrap,mtrr vga=0x318
Here is a chart of kernel mode numbers for the 'vga=' boot parameter.
| Colours | 640x400 | 640x480 | 800x600 | 1024x768 | 1152x864 | 1280x1024 | 1400x1050 | 1600x1200 |
|---|---|---|---|---|---|---|---|---|
| 4 bits | ? | ? | 0x302 | ? | ? | ? | ? | ? |
| 8 bits | 0x300 | 0x301 | 0x303 | 0x305 | 0x161 | 0x307 | ? | 0x31C |
| 15 bits | ? | 0x310 | 0x313 | 0x316 | 0x162 | 0x319 | 0x340 | 0x31D |
| 16 bits | ? | 0x311 | 0x314 | 0x317 | 0x163 | 0x31A | 0x341 | 0x31E |
| 24 bits | ? | 0x312 | 0x315 | 0x318 | ? | 0x31B | 0x342 | 0x31F |
| 32 bits | ? | ? | ? | ? | 0x164 | ? | ? | ? |