Hi again, Yohann, the patch I sent fixes a bug in that last commit you posted.Unfortunately, the commit URL I submitted was wrong (including a non-existant asterisk at the end of it).
Here  is the good one. http://github.com/rcmorano/live-helper-gfxboot-hack/commit/9f9984cc27c175ed882242962064ca1770c34fc9
Cheers! -- Roberto C. Morano Emergya Consultoría. Tel. +34 954 51 75 77 Fax. +34 954 51 64 73http://www.emergya.es