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Thread: Once 'Shutdown ' Laptop 'Reboots'

  1. #1
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    Once 'Shutdown ' Laptop 'Reboots'

    BACKSTORY:
    I recently purchased a Toshiba laptop that came pre-installed with Windows 8; however, I did not like this O/S and decided I would try Ubuntu 12.10.

    PROBLEM:
    When I go to 'Shutdown' or go via terminal and type 'Poweroff' with Ubuntu 12.10 (I've also tried with LinuxMint 13) my laptop will shutdown for 1-3 seconds then turn itself back on when the power adapter is plugged in.

    Has anyone experienced or heard of this issue?

    SOLUTION:
    A solution I've found, is that if I unplug the laptop before shutting it down, that it will remain powered off.

    NOTE:
    When a Windows O/S has been installed, the laptop powers off while the power adapter is plugged in.

    Thanks,

    Mr J Lepage

  2. #2
    dino99's Avatar
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    Looks like you probably have a bios setting to do so.

  3. #3
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    Quote Originally Posted by dino99 View Post
    Looks like you probably have a bios setting to do so.
    My BIOS settings have been restored to default yet the problem still persists.

    Could you please, elaborate on what BIOS setting you suggest I edit?

  4. #4
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    Here is something you can try. I also have a Toshiba Laptop and had the same issue of rebooting after a power down.

    Fair warning this did work for me. But I can't promise it will work for you.

    Open a terminal and type "sudo gedit /etc/default/grub" minus the "" into the terminal. Then type in your password.

    You made need to use this command "sudo nano /etc/default/grub" as an alternate if gedit is not installed on your computer.

    In the window that opens you need to add some things to a cmd line

    You should see a line that looks like the one below. You need to add the bolded text.

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nomux=1 i8042.reset"


    Give it a try and see if it works. if it does then great. If it doesn't then revert the changes.

  5. #5
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    Quote Originally Posted by Brandel Valico View Post
    Here is something you can try. I also have a Toshiba Laptop and had the same issue of rebooting after a power down.

    Fair warning this did work for me. But I can't promise it will work for you.

    Open a terminal and type "sudo gedit /etc/default/grub" minus the "" into the terminal. Then type in your password.

    You made need to use this command "sudo nano /etc/default/grub" as an alternate if gedit is not installed on your computer.

    In the window that opens you need to add some things to a cmd line

    You should see a line that looks like the one below. You need to add the bolded text.

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nomux=1 i8042.reset"


    Give it a try and see if it works. if it does then great. If it doesn't then revert the changes.
    I just got home and tried this resolution; however, it did not work for me.

    Does anyone have any further suggestions?

    Thanks,

    Mr J Lepage

  6. #6
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    You need to perform:

    Code:
    sudo update-grub
    to actually write those changes to the grub menu table. So give it another try.

    It's possible that it is a bug in the ACPI for that laptop and an update to BIOS may fix it.
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  7. #7
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    Re: Once 'Shutdown ' Laptop 'Reboots'

    Quote Originally Posted by tgalati4 View Post
    You need to perform:

    Code:
    sudo update-grub
    to actually write those changes to the grub menu table. So give it another try.

    It's possible that it is a bug in the ACPI for that laptop and an update to BIOS may fix it.
    I did a sudo update-grub when following the steps.

    How would you suggest I update the BIOS?

    Thanks,

    Mr J Lepage

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