I had been frustrated by the apparent inability of the suppliers to provide anything other than an obsolete Ubuntu-centric 3.8+ kernel for the Odroid U2, and other kernels I had tested were somewhat ‘incomplete’…

I finally managed to get a 3.17-r3 version from https://github.com/tobiasjakobi/linux-odroid/tree/odroid-3.17.y

This now includes the necessary ‘bits’ for the U3, which is functionally identical to the U2…   After some minor config changes – including de-selecting some of the mali options, as some header files were missing/obsolete – I managed to get it to boot on my Odroid U2:

Fedora release 20 (Heisenbug)
Kernel 3.17.0-rc3 on an armv7l (ttySAC1)
..........
# uname -a
Linux rgodroid 3.17.0-rc3 #4 SMP PREEMPT Thu Sep 11 02:42:18 BST 2014 armv7l armv7l armv7l GNU/Linux

Unfortunately, further testing was impossible, after a sudden – and catastrophic – USB stick failure, which trashed the root filesystem..

More testing will follow, when that is replaced!

Robert Gadsdon.   September 12, 2014.