Lanuch error on crouton. Cannot launch crouton.

Here's the error code:
Entering /mnt/stateful_partition/crouton/chroots/precise...
/usr/bin/startxfce4: Starting X server

_XSERVTransmkdir: ERROR: euid != 0,directory /tmp/.X11-unix will not be created.

X.Org X Server 1.11.3
Release Date: 2011-12-16
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.42-61-generic x86_64 Ubuntu
Current Operating System: Linux localhost 3.10.18 #1 SMP Sun Aug 16 14:32:59 PDT 2015 x86_64
Kernel command line: cros_secure console= loglevel=7 init=/sbin/init cros_secure oops=panic panic=-1 root=/dev/dm-0 rootwait ro dm_verity.error_behavior=3 dm_verity.max_bios=-1 dm_verity.dev_wait=1 dm="1 vroot none ro 1,0 2506752 verity payload=PARTUUID=396b7f47-ae0e-9c41-b11f-b39a543224b0/PARTNROFF=1 hashtree=PARTUUID=396b7f47-ae0e-9c41-b11f-b39a543224b0/PARTNROFF=1 hashstart=2506752 alg=sha1 root_hexdigest=8e836a8b0eb2f974f54da7d4c64bb8afb9847af5 salt=fdffa780eafffd089f122c3f746bac6050a89240ee4419f08f334c3b66e1dcb6" noinitrd vt.global_cursor_default=0 kern_guid=396b7f47-ae0e-9c41-b11f-b39a543224b0 add_efi_memmap boot=local noresume noswap i915.modeset=1 tpm_tis.force=1 tpm_tis.interrupts=0 nmi_watchdog=panic,lapic
Build Date: 12 February 2015 02:49:01PM
xorg-server 2:1.11.4-0ubuntu10.17 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.30.2
        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.1.log", Time: Sun Aug 30 22:51:46 2015
(==) Using system config directory "/usr/share/X11/xorg.conf.d"

Fatal server error:
no screens found

Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
Please also check the log file at "/tmp/Xorg.crouton.1.log" for additional information.

 ddxSigGiveUp: Closing log
Server terminated with error (1). Closing log file.
/usr/bin/xinit: giving up
/usr/bin/xinit: unable to connect to X server: No such file or directory
/usr/bin/xinit: server error
Unmounting /mnt/stateful_partition/crouton/chroots/precise...

Someone please help. This is for chromebook/chromeOS.