I also have this bug, I'm using kde on my samsung chromebook with crouton. Here is the command lines when starting. Entering /mnt/stateful_partition/crouton/chroots/precise... Failed to start message bus: Failed to open "/etc/selinux/targeted/contexts/dbus_contexts": No such file or directory WARNING: starting chroot system dbus daemon failed with code 1 _XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root X.Org X Server 1.15.1 Release Date: 2014-04-13 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.42-75-generic x86_64 Ubuntu Current Operating System: Linux localhost 3.18.0-13434-gc3678fb #1 SMP PREEMPT Wed Dec 7 23:31:40 PST 2016 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 3584000 verity payload=PARTUUID=f37d1afa-50b8-c048-8794-67cbdb7bcd9b/PARTNROFF=1 hashtree=PARTUUID=f37d1afa-50b8-c048-8794-67cbdb7bcd9b/PARTNROFF=1 hashstart=3584000 alg=sha1 root_hexdigest=c950d2f1a9c79368c512343fe96625c90c9fd1c5 salt=7dcbba4eddb8e698a428f6a3debed767485f61702155d3a4cf7148c945a5f135" noinitrd vt.global_cursor_default=0 kern_guid=f37d1afa-50b8-c048-8794-67cbdb7bcd9b 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 03:37:52PM xorg-server 2:1.15.1-0ubuntu2~precise5 (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: Tue Dec 13 02:12:09 2016 (==) Using system config directory "/usr/share/X11/xorg.conf.d" setversion 1.4 failed: Permission denied Initializing built-in extension Generic Event Extension Initializing built-in extension SHAPE Initializing built-in extension MIT-SHM Initializing built-in extension XInputExtension Initializing built-in extension XTEST Initializing built-in extension BIG-REQUESTS Initializing built-in extension SYNC Initializing built-in extension XKEYBOARD Initializing built-in extension XC-MISC Initializing built-in extension SECURITY Initializing built-in extension XINERAMA Initializing built-in extension XFIXES Initializing built-in extension RENDER Initializing built-in extension RANDR Initializing built-in extension COMPOSITE Initializing built-in extension DAMAGE Initializing built-in extension MIT-SCREEN-SAVER Initializing built-in extension DOUBLE-BUFFER Initializing built-in extension RECORD Initializing built-in extension DPMS Initializing built-in extension X-Resource Initializing built-in extension XVideo Initializing built-in extension XVideo-MotionCompensation Initializing built-in extension XFree86-VidModeExtension Initializing built-in extension XFree86-DGA Initializing built-in extension XFree86-DRI Initializing built-in extension DRI2 Loading extension GLX xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted) [intel_init_bufmgr:1069] Error initializing buffer manager. setversion 1.4 failed: Permission denied crouton: version 1-20161129162558~master:5f2f11f9 release: precise architecture: amd64 xmethod: xorg targets: kde host: version 8872.70.0 (Official Build) stable-channel celes kernel: Linux localhost 3.18.0-13434-gc3678fb #1 SMP PREEMPT Wed Dec 7 23:31:40 PST 2016 x86_64 x86_64 x86_64 GNU/Linux freon: yes startkde: Starting up... Failed to start message bus: Failed to open "/etc/selinux/targeted/contexts/dbus_contexts": No such file or directory EOF in dbus-launch reading address from bus daemon startkde: Could not start D-Bus. Can you call qdbus? This is running in the chromen=book's terminal while all i can do on the kde desktop is hit okay underneath Could not start D-Bus. Can you call qdbus?