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Thread: NX bit doesn't work in 64-bit kubuntu

  1. #1
    Join Date
    Dec 2009
    Beans
    2

    NX bit doesn't work in 64-bit kubuntu

    I'm using kubuntu-9.10-desktop-amd64.iso live (booted via grub2 loopback directly from iso on hd, in case that makes a difference).
    Processor is a E2180 which according to the Intel website supports the NX bit. I've enabled the option "Execute Bit Support" in the BIOS. /proc/cpuinfo shows both nx and pae in both flags lines.
    But dmesg says "Using x86 segment limits to approximate NX protection".
    Any idea what the problem could be?

  2. #2
    Join Date
    Jan 2008
    Location
    USA
    Beans
    971
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: NX bit doesn't work in 64-bit kubuntu

    So, are you running this from a VM or what?

  3. #3
    Join Date
    Oct 2006
    Beans
    4,619
    Distro
    Kubuntu 14.04 Trusty Tahr

    Re: NX bit doesn't work in 64-bit kubuntu

    This was a bug and it has been fixed. https://bugs.launchpad.net/ubuntu/+s...ux/+bug/454285
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