Yes, it can be configured from the boot options. As you have suse, I guess you use GRUB. So, open /boot/grub/menu.lst as root with a text editor and find the following lines:
Code:
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux 10.1
root (hd0,5)
kernel /boot/vmlinuz root=/dev/hda6 vga=0x31a resume=/dev/hda7 splash=silent showopts
initrd /boot/initrd
They may be a little different but you should be able to see a similar "vga=xxxxx" option. Remove it, so that it looks like that...
Code:
###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE Linux 10.1
root (hd0,5)
kernel /boot/vmlinuz root=/dev/hda6 resume=/dev/hda7 splash=silent showopts
initrd /boot/initrd
...and you will get a resolution of 640x480 pixels in the virtual terminal after you reboot.