Where is X11's error log located in OSX Lion? I'm trying to run the Xmonad window manager in X11 on OSX lion, I load Xmonad at x11 startup, and X11 just crashes, sometimes it does not. I'm just wondering how I can view some kind of error log to ascertain why it is crashing.

Solution:

The log file I needed was system.log in /private/var/log/system.log

Thanks for the help
Fire up Terminal
cat /private/var/log/system.log


This will get up the System Log and let you see what is going on. You should be able to find the results you need in there.

If need be, pass that onto the grep command get it to find the strings you want.

cat /private/var/log/system.log | grep [string]

This will output the strings you requrie to the screen specifically.