$ cat /var/log/Xorg.0.log
[    30.248] 
X.Org X Server 1.20.1
X Protocol Version 11, Revision 0
[    30.248] Build Operating System: Linux 4.20.6-artix1-1-ARTIX x86_64 Gentoo
[    30.248] Current Operating System: Linux athens 4.9.144-3 #1 SMP Fri Feb 22 18:19:44 MST 2019 x86_64
[    30.248] Kernel command line: BOOT_IMAGE=/kernel-debian-sources-lts-x86_64-4.9.144-3 real_root=/dev/sda3 rootfstype=ext4 rand_id=7LIRE2FM
[    30.249] Build Date: 08 February 2019  09:16:33PM
[    30.249]  
[    30.249] Current version of pixman: 0.34.0
[    30.249] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
...