Resolution in console

Edit line to start kernel. For example in grub.conf if you use grub.

vim /boot/grub/grub.cfg to the end kernel starting line type vga=<code>

<code> will be

     640x480   800x600   1024x768   1280x1024
256   0x301     0x303     0x305      0x307
32k   0x310     0x313     0x316      0x319
64k   0x311     0x314     0x317      0x31A
16M   0x312     0x315     0x318      0x31B

If you want 1024×768 you must take for example for 64k buffer — vga=0×317.