[Bug 1363719] Re: efibootmgr may create a duplicated boot entry, "breaking" UEFI boot.

[Mark Rich]

I have a Samsung Series 9 (NP900X3D) laptop. Previous versions of Ubuntu
worked with UEFI but by both updating over-the-air from 14.04 and by
doing a fresh install from the live CD burned to a USB stick (by using
existing partition table or by zapping it and creating a new one), the
system refused to boot at all with 14.10.

This is very much a bad bug as it's taken me 5 days to get this fixed!
Killing boot is a fairly big showstopper!

>From the above thread, jorisc90's note from point 4 was the fix for me.
The laptop now boots again.

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https://bugs.launchpad.net/bugs/1363719

Title:
  efibootmgr may create a duplicated boot entry, "breaking" UEFI boot.

Status in “efibootmgr” package in Ubuntu:
  Confirmed

Bug description:
  Hey,
    the current version of efibootmgr has a small ordering bug that causes, at least on x240, a duplicated boot entry to be added to UEFI, breaking the boot - UEFI resets everything to default values, and you have to boot from usb stick to fix uefi entries. There is an upstream patch that fixes it, and it would be great if we could add it.

  Upstream bug report is https://github.com/vathpela/efibootmgr/issues/7

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