The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Type "ONE_LEVEL" has 1 levels, but <RALT> has 2 symbols
>                   Ignoring extra symbols
Errors from xkbcomp are not fatal to the X server
(II) Server terminated successfully (0). Closing log file.

X.Org X Server 1.18.3
Release Date: 2016-04-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.13.0-85-generic x86_64 Ubuntu
Current Operating System: Linux amin-MS-7636 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=4bc22359-34b7-43fa-9783-1e28527cf3b6 ro 152535455565 quiet splash
Build Date: 07 April 2016  09:18:50AM
xorg-server 2:1.18.3-1ubuntu2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.33.6
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat May 28 18:49:40 2016
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(II) Server terminated successfully (0). Closing log file.

X.Org X Server 1.18.3
Release Date: 2016-04-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.13.0-85-generic x86_64 Ubuntu
Current Operating System: Linux amin-MS-7636 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=4bc22359-34b7-43fa-9783-1e28527cf3b6 ro 152535455565 quiet splash
Build Date: 07 April 2016  09:18:50AM
xorg-server 2:1.18.3-1ubuntu2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.33.6
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat May 28 18:54:28 2016
(==) Using system config directory "/usr/share/X11/xorg.conf.d"