chronos@localhost / $ sudo startxfce4
Entering /mnt/stateful_partition/crouton/chroots/kali...
/usr/bin/startxfce4: Starting X server

_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root

X.Org X Server 1.19.0
Release Date: 2016-11-15
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
Current Operating System: Linux localhost 3.14.0 #1 SMP PREEMPT Sat Dec 17 11:05:35 PST 2016 x86_64
Kernel command line: cros_secure console= loglevel=7 init=/sbin/init cros_secure oops=panic panic=-1 root=PARTUUID=69ec4b83-6027-e749-90c3-1c965caf0b5d/PARTNROFF=1 rootwait rw dm_verity.error_behavior=3 dm_verity.max_bios=-1 dm_verity.dev_wait=0 dm="1 vroot none ro 1,0 3584000 verity payload=ROOT_DEV hashtree=HASH_DEV hashstart=3584000 alg=sha1 root_hexdigest=a2ea89d59386b599843e9fe8179f32b4219dbd82 salt=a9a6d6f5986b4158eb5fd8e611921f4f859a8cb8d938daf6a3e27c9a5657ffd4" noinitrd vt.global_cursor_default=0 kern_guid=69ec4b83-6027-e749-90c3-1c965caf0b5d add_efi_memmap boot=local noresume noswap i915.modeset=1 tpm_tis.force=1 tpm_tis.interrupts=0 nmi_watchdog=panic,lapic i915.enable_psr=1
Build Date: 23 November 2016  07:20:23PM
xorg-server 2:1.19.0-2 (https://www.debian.org/support)
Current version of pixman: 0.34.0
        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: "/tmp/Xorg.crouton.4.log", Time: Sun Dec 25 22:04:33 2016
(++) Using config file: "/etc/X11/xorg-dummy.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
/usr/lib/xorg/Xorg: symbol lookup error: /usr/lib/xorg/modules/drivers/dummy_drv.so: undefined symbol: ChangeWindowProperty
/usr/bin/xinit: giving up
/usr/bin/xinit: unable to connect to X server: Connection refused
/usr/bin/xinit: server error
Unmounting /mnt/stateful_partition/crouton/chroots/kali...
Sending SIGTERM to processes under /mnt/stateful_partition/crouton/chroots/kali...
chronos@localhost / $