I enabled the kernel messages a long time ago because I was playing around with Ubuntu. But now I am finished and I want to disable them again, but forgot how to.
/etc/default/grub already contains the line:
#GRUB_TERMINAL=console
(including the hash which disables it).
/etc/default/grubhas the following line uncommentedGRUB_TERMINAL=console. If yes, then open it withsudo gedit /etc/default/grub, add a#in the beginning of that line and save. Do not change anything else. – asheeshr Sep 22 '13 at 13:12