Ok,
/var/log/Xorg.0.log
could have useful info in it.
It's too big, so I searched for the stuff that starts with "(EE)". I'm copying from the laptop to here by hand so bare with me. Line number and content:
99 : (EE) Failed to load module "interlmaster" (module does not exist, 0) 284 : (EE) Failed to load module "intelbatchbuffer" (module does not exist, 0) 391 : (EE) open /dev/fb0 : No such file or directory
Here are the last two lines:
405 : Fatal server error : 406 : Caught signal 11. Server aborting
Wanas