How do I disable ACPI when booting?

Please add acpi=off to the kernel command line -- it's just slightly different than doing it with the LiveCD:

1. Press the Shift when booting up, to get the Grub menu. Use the arrow keys to navigate/highlight the entry you want (usually the first one).

   

2. Press e to edit that entry, which will show you the details:

   

3. Find the linux entry as shown above, use the arrow keys to get to it, and then press the End key to get to that line's end (which may be on the next line!). Enter acpi=off as shown, and press Ctrl+X to boot.

4. You can make this workaround permanent by:

   • sudo nano /etc/default/grub
   • Change line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"
   • Ctrl-X, press Y and then Enter to save and exit.
   • sudo update-grub
   • Reboot and you should no longer have the black screen problem.

See also:

• How do I add a kernel boot parameter?

Use Boot-Repair's Advanced options to add acpi=off (or any other kernel option) to your GRUB in 1 click. It will also provide a BootInfo summary if you need more help.

See also: https://help.ubuntu.com/community/BootOptions#Changing_boot_options_Permanently_for_an_Existing_Installation