Thank you Ethan. Now I have kernel 2.2.18pre21 up and running, which is the latest stable from samba. In order to have X11 (old) running, I had to modify the pointer section from
BusMouse on /dev/adbmouse to ImPS/2 on /dev/input/mice. X11 is up and running again. So far so good. What is not working is the second and the third button; I use BootX, where adb_buttons is set to "103,111". Every time I press one of these two buttons, I read 3~ and 4~ on the console. Shall I remove this setting or modify it somehow? Thanks again. Sergio