Bugs should be reported to bug tracking system using
the xorg compoent. Before
reporting bugs, please check the server log file, which can be
/var/log/Xorg.0.log on most platforms. If you
can't resolve the problem yourself, send the entire log file with your
bug report but not the operating system core dump. Do not edit the
log file as our developers use it to reproduce and debug your problem.
Please attach it to your bug report.