SUSE
set setterm -blank 0 in boot.local
RedHat
echo setterm -powersave off -powerdown 0 -blank 0 >> /etc/rc.local
Gentoo
echo "setterm -powerdown 0 -blank 0" >> /etc/conf.d/local.start
Ubuntu
sh -c 'setterm -blank 0 -powersave off -powerdown 0 < /dev/console > /dev/console 2>&1'