Some computers may need to disable acpi to install/boot Ubuntu OS. To install ubuntu, you can select the option acpi=off when booting with the live cd. This simple tutorial will show you how to disable acpi after installed ubuntu.

At first booting up:

  • 1. Start your system and wait for the GRUB menu to show (if you don’t see a GRUB menu, press and hold the left Shift key right after starting the system).
  • Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
  • Go down to the line starting with linux and add your parameter acpi=off to its end.
  • Now press Ctrl + x to boot.

Make the change permanent:

  • In Ubuntu, open terminal from the dash or press Ctrl+Alt+T, execute this to edit grub:
    gksudo gedit /etc/default/grub
  • Find the line starting with GRUB_CMDLINE_LINUX_DEFAULT and append acpi=off to its end, make it look like:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"

    Save and close the file.

  • Finally, update the change via:
    sudo update-grub
  • On the next reboot, the kernel should be started with this boot parameter.