The problem is simple :
I own a tablet : ASUS Transformer T100TA, but the Acer Aspire Switch 10 is also
affected.  (this bug concerning ubuntu :
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1341944)
Symtom:
I can't install OpenSuSE because of a specific component : UEFI is 32-bit,
despite the Processor architecture 64bit.


"
Intel released a new Atom iteration (Bay Trail) in late 2013 and has indicated
that they will continue to develop and release Atom CPUs due to consumer market
demand. At the time of this filing there are a number of Atom-based tablets and
compact laptops/netbooks being actively sold and marketed by major OEMs
including Dell, HP, ASUS, and Acer. None of these devices have 64-bit UEFI
firmware. It is also important to note that these Atom CPUs are 64-bit, but
explicitly require a 32-bit UEFI bootloader.
"

We need a Grub2 32-bit EFI enabled for booting the installation process.

Thanks a lot