I want to know is there any way to stop automatic time update permanently in Ubuntu 12.04 .
Thank you
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up.
Sign up to join this communityClick on the clock, and then select time and date settings
And then select "Manually"
You can also ensure the ntp package is not installed (clicking on the button will show if you if you have it installed or not: