Comment # 7 on bug 1100114 from Johannes Krottmayer

I used the SystemRescueCD to remove all Xorg log files and then I restart my
PC.
After XDM fails, I looked into /var/log and there was no Xorg.0.log file.

Xorg doesn't come to write the log file.

But how can I debug this, without changing the behavior in the source of Xorg?
That is an unpleasant issue.