Tweaking Ubuntu‎ > ‎

Change kernel parameters in Grub2

sudo gedit /etc/default/grub 

add the kernel parameter to the GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" line, between the quotations.

then run in a terminal:

sudo update-grub


e.g. for running ubuntu 12.04 on old hardware add 
acpi=off


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