No keyboard with L4Linux

I boot L4Linux-2.6 on Fiasco, using l4con on a graphical console, and the drops ramdisk. Everything boots well, and I obtain the "dropsbox login:", but, unfortunately, I have no keyboard entry ... In the previous kernel messages, there is one saying : i8042.c: Can't read CTR while initializing i8042 Can it be related to my problem ? Thanks Pascal