Regarding my comment #13 at duplicate bug #1050940 I now believe (after
much investigation & help from others) that my issue was actually more
firmware related than due to a bug in Ubuntu.

What had happened is that I installed Ubuntu Trusty in UEFI mode
alongside Windows 8.1 (made sure that the live DVD booted in UEFI mode)
but after installation the machine just booted straight into Windows
8.1. I knew however that you could display the BIOS boot menu pressing
F10 so I did so, but Ubuntu did not show up anywhere in the boot menu,
and selecting any of the other options either booted straight into
Windows or did nothing at all.

I then ran Boot Repair just to collect a boot info summary and next
actually ran the Boot Repair recommended repair (also collecting a
second boot info summary when complete) and still the machine would just
boot straight into Windows with no intervention, but if I pressed F10 at
boot Ubuntu did now appear in the BIOS boot menu and selecting that
showed the grub boot screen as it should with both Ubuntu and Windows -
both of which worked OK.

It was at that point that I made the assumption that I'd been affected
by duplicate bug #1050940 but I followed up by asking a question at the
forums, and after following the instructions provided by oldfred I now
get the grub boot menu at boot with no intervention:

http://ubuntuforums.org/showthread.php?t=2264348&p=13223803#post13223803

Sadly I still don't 100% understand what went wrong, or what exactly I
did to fix it, but I now assume that I was mistaken about being affected
by this specific bug.

Sorry, there's just a huge learning curve involved in learning UEFI
basics and to be honest I'm not 100% certain which of my assumptions is
correct and which is not.

BTW I'd have been glad to collect actual logs rather than just posting
the pastebin links but I was unsure what was needed or where to find it
:^(

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https://bugs.launchpad.net/bugs/1302418

Title:
  grub-installer should fall back to grub-pc instead of grub-efi when
  there is no EFI system partition

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