$ sudo Xorg -configure

X.Org X Server 1.17.2
Release Date: 2015-06-16
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.13.0-68-generic x86_64 Ubuntu
Current Operating System: Linux stollen 4.2.0-35-generic #40-Ubuntu SMP Tue Mar 15 22:15:45 UTC 2016 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
Build Date: 12 November 2015  05:33:29PM
xorg-server 2:1.17.2-1ubuntu9.1 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.32.6
        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: Mon Apr 11 18:30:58 2016
List of video drivers:
        intel
        fglrx
        modesetting
(++) Using config file: "/home/andi/xorg.conf.new"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE)
(EE) Backtrace:
(EE) 0: Xorg (xorg_backtrace+0x4e) [0x56515d6dd68e]
(EE) 1: Xorg (0x56515d529000+0x1b89f9) [0x56515d6e19f9]
(EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f4f7885b000+0x352f0) [0x7f4f788902f0]
(EE)
(EE) Segmentation fault at address 0x0
(EE)
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting
(EE)
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE)
(EE) Server terminated with error (1). Closing log file.