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Thread: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

  1. #1
    Join Date
    Jul 2008
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    Smile ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    ............
    Last edited by villageillness; September 8th, 2008 at 02:30 PM.

  2. #2
    Join Date
    Apr 2006
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    NJ
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    Edgy Eft Testing

    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    In the grub menu you can edit the entries to run these special parameters.
    I found a blog here which explains this process. Don't forget to back up these files first!
    "You come in on your own in this life, you know you leave on your own" - Richard Ashcroft

  3. #3
    Join Date
    May 2007
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    Ubuntu

    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    You will want to add those options to /boot/grub/menu.list where it says "# defoptions" and "# altoptions"
    Code:
    sudo cp /boot/grub/menu.lst /boot/grub/menu.lst.backup
    gksudo gedit /boot/grub/menu.lst
    Do the edit, save and close, then run
    Code:
    sudo update-grub

  4. #4
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    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    .........
    Last edited by villageillness; September 8th, 2008 at 02:30 PM.

  5. #5
    Join Date
    May 2007
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    Ubuntu

    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    You can't edit the menu.lst file until you are in Ubuntu. It can be done from the LiveCD, but there isn't much point if it won't boot with the options entered manually in GRUB are not working. Are you sure you are adding them in the right place from GRUB? It should look similar to
    Code:
    kernel		/boot/vmlinuz-2.6.24-19-generic root=UUID=30fcb748-ad1e-4228-af2f-951e8e7b56df ro splash quiet acpi=off noapic nolapic
    Note that there is no space between acpi, =, and off. If you delete the "quiet" part you can see where it is hanging during the boot sequence.

  6. #6
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    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    >..........
    Last edited by villageillness; September 8th, 2008 at 02:30 PM.

  7. #7
    Join Date
    May 2007
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    Ubuntu

    Re: ubuntu hangs on boot. "acpi = off" "noapic" and "nolapic"

    You should make sure to add them to "# defoptions" and "# altoptions" like I said earlier because if an update comes around for GRUB or a new kernel is added, menu.lst will be regenerated and won't save the options you tagged on to the end of the kernel lines.

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