Comment 72 for bug 1325801

I have a similar problem, see
https://www.kubuntuforums.net/showthread.php?66770-Live-USB-does-not-boot&p=361703#post361703

I tried some more things, and the only thing I get to work is with the dd command:
- Kali Linux
- Ubuntu 14.04.1 iso image
- Kubuntu 14.04.1 iso image

What does not work: (dd nor usb creator nor Unetbootin)
- Kubuntu 14.10 (I even borrowed a dvd RW from a neighbour and burned the image on the dvd)
- Kubuntu 14.04 initial iso image
- Kubuntu 15.04 daily
- mint 17

As 14.04 is an LTS, IMO the problem should be corrected there as wel.