Using Matrox G400 16 MB and Fuitsu Siemens 38B1 at the startup I tried many tips of you( in combination too) and other tips of F2 screen

Then the message is the following
"You passed an undefined mode number. Press RETURN to see mode Vesa mode vailable.. I tried 0 (80x25 ) or 3 (80x2.
It is ok. The coloured text is good and so I can see many hardware well recognized and among these there is Matrox G400 16 MB AGP using XFree86 server - fbdev)
and a generic monitor voice

Tryng fb102x768 the screen is blinking, trying to start X11..
then I can read in text mode:
trying XFree (vesa)...failed
trying XFree (fbdev) ...failed

and then I return to command prompt

What do you think about this?

thanks
Rob