Comment 3 for bug 577906

Thanks for your reply.
I updated xorg.conf but it didn't solved the problem.

What I did :
After startup, I ran "ps -fe | grep X" and found the parameters used to launch X at startup since X was still running.
I killed the X process and then I launched it again with the same parameters (as root) and logged the messages into a file (X.log.auto). Then the screen stayed black a few minutes until I decided to kill it again from TTY1.
Then I ran "startx", which works pretty well (using the SAME configuration file) and I logged the messages into another file (X.log.manu).

I also added the diff of these two files.