head -6 /var/log/Xorg.0.log
[ 9.705]
X.Org X Server 1.12.1
Release Date: 2012-04-13
[ 9.705] X Protocol Version 11, Revision 0
[ 9.705] Build Operating System: openSUSE SUSE LINUX
[ 9.705] Current Operating System: Linux linux.site 3.4.0-rc5-3-desktop #1 SMP PREEMPT Mon Apr 30 20:41:01 UTC 2012 (d5a693e) i686