[ubuntu_studio] Keyboard-LUKS-LVM

Hi people

I tried to install Ubuntu-Studio on my machine again but this time I must realize strange things.
I googled or better yandexed half the web and didnt find any reasonable solution yet.
Lets keep it brief.

Machine: Shuttle XH61V, 16GB RAM, 120GB HARDDISK

I used U.-Studio on the same machine already and it was working 100 percent ok.

After the flawless installation where I choose an encrypted hard-disk my wireless keyboard does not get
recognized anymore.
To be accurate, after the bios and the so called legacy grub-menu where the keyboard still gets recognized.

Has there been any change in the keel and/or grub with respect to the boot-order of the keel modules?

I tried several options without success.
Actually I use the live-installer to post here.
I tried this -> http://ubuntuforums.org/showthread.php?t=2201983
and some deviations without success.

Its kind a strange because the machines configuration (hardware) didnt change at all.

Any suggestions or links to some paper?
Or did I just catch a bad build because the mentioned postings in the web working on that topic are all already old.
Usually one can go far from it that, if problems like this in so major OS arise, they get solved at least in the next release.

Thanks in advance

Gee