https://bugs.freedesktop.org/show_bug.cgi?id=104206
--- Comment #7 from Michel Dänzer michel@daenzer.net --- (In reply to Andrew from comment #6)
the X doesn't hard crash when i turn an acceleration off.
Normally you'd want Option "Accel" "off" to disable accleration, not "AccelMethod" "none".
X still doesn't work - just exists back to the terminal.
The Xorg log doesn't show any problem anymore, so it sounds like that's an X client session issue now. How exactly are you trying to start X?