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Thread: Secure boot violation

  1. #1
    Join Date
    Feb 2013
    Beans
    2

    Secure boot violation

    My new computer is an Acer xc600. The first thing i did was to delete the Windows 8 operating system, format the hd and installed ubuntu 12.10. No big problems so far.

    But now the computer is totaly locked. When I start I get a red frame with the text "Secure boot violation. Invalid signature detected. Check secure boot policy in set up." There is also a OK-buttom I can't click.

    I don't know how to reach setup. F12, F11 and so on doesn't work.

    Can't start from usb or cd either, because it's not seems possible to make a choise when start. I also tried pmagic with the same result.

    I am stucked. Any help here?

  2. #2
    Join Date
    Mar 2010
    Location
    Metro-ATL; PM free zone.
    Beans
    Hidden!
    Distro
    Lubuntu 14.04 Trusty Tahr

    Re: Secure boot violation


  3. #3
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Secure boot violation

    A user in another thread was able to flash UEFI/BIOS and get back in.

    But many new system have a fast boot that only gets into UEFI from Windows. You have to turn fast boot off first from Windows.

    Ubuntu/Grub added a new entry that should get into UEFI menu. But no idea how to get to it if you cannot change boot to flash drive.
    For info on UEFI boot install & repair - Updated Mar 2015:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  4. #4
    Join Date
    Feb 2013
    Beans
    2

    Unhappy Re: Secure boot violation

    Now I managed to reach the setup by the DEL key (silly me, it was TO simple).

    But it doesn't help much. When I set the start to usb or cd/dvd, the machine still try to start the hard disk. There are no alternatives to change the prior hard disk from uefi to anything else.

    When I try to start I get the message: Error: No boot disk has been detected or the disk has failed.

  5. #5
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Secure boot violation

    You should also have a one time boot key.


    UEFI/BIOS Boot keys - about halfway down on this Microsoft page
    http://social.technet.microsoft.com/...ows-to-go.aspx
    For info on UEFI boot install & repair - Updated Mar 2015:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







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