Unfortunately the mess that is UEFI Secure Boot still causes issues on some hardware. In my case it’s a Toshiba Z930 Ultrabook. I have documented the procedure to get it working here.
However it turns out that there is no ‘Trusty’ release for the boot-repair utility. The fix is relatively easy.
sudo vim /etc/apt/sources.list.d/yannubuntu-boot-repair-trusty.list
#change the following line from 'trusty' to 'saucy'
sudo vim /etc/apt/sources.list.d/yannubuntu-boot-repair-trusty.list
You can then just finish with
sudo apt-get update
sudo apt-get install -y boot-repair && (boot-repair &)
Another option is to boot off a USB image (or CD) created from http://sourceforge.net/p/boot-repair-cd/home/Home/.
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