ubiquity-dm: starting
ubiquity-dm: plymouth
ubiquity-dm: start X ['X', '-br', '-ac', '-noreset', '-nolisten', 'tcp', '-background', 'none', 'vt1', ':0']

X.Org X Server 1.20.3
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-139-generic x86_64 Ubuntu
Current Operating System: Linux kubuntu 4.18.0-11-generic #12-Ubuntu SMP Tue Oct 23 19:22:37 UTC 2018 x86_64
Kernel command line: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd quiet splash --- maybe-ubiquity
Build Date: 22 November 2018  01:47:34PM
xorg-server 2:1.20.3-1ubuntu1 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.36.0
	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: "/var/log/Xorg.0.log", Time: Sun Jan  6 10:59:46 2019
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
pci id for fd 14: 80ee:beef, driver (null)
(II) modeset(0): Initializing kms color map for depth 24, 8 bpc.
ubiquity-dm: set vars
ubiquity-dm: pam_open_session
ubiquity-dm: dm-scripts
ubiquity-dm: dconf-service
ubiquity-dm: start frontend kde_ui
ubiquity-dm: paint background
ubiquity-dm: add_ubiquity_kdedir
ubiquity-dm: start kde4breeze
setting widget style: "Breeze" true
ubiquity-dm: kde4breeze exited with code 0
ubiquity-dm: start kwin
ubiquity-dm: start greeter
Couldn't start kglobalaccel from org.kde.kglobalaccel.service: QDBusError("org.freedesktop.DBus.Error.Spawn.ChildExited", "Process org.kde.kglobalaccel exited with status 1")
Service started, version: 7.0.0
Couldn't start kglobalaccel from org.kde.kglobalaccel.service: QDBusError("org.freedesktop.DBus.Error.Spawn.ChildExited", "Process org.kde.kglobalaccel exited with status 1")
OpenGL vendor string:                   VMware, Inc.
OpenGL renderer string:                 llvmpipe (LLVM 7.0, 256 bits)
OpenGL version string:                  3.1 Mesa 18.2.6
OpenGL shading language version string: 1.40
Driver:                                 LLVMpipe
GPU class:                              Unknown
OpenGL version:                         3.1
GLSL version:                           1.40
Mesa version:                           18.2.6
X server version:                       1.20.3
Linux kernel version:                   4.18
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 3238, resource id: 6291462, major code: 15 (QueryTree), minor code: 0
ubiquity-dm: greeter exited with code 0
The X11 connection broke (error 1). Did the X11 server die?
(II) Server terminated successfully (0). Closing log file.
ubiquity-dm: set_locale
Generating locales (this might take a while)...
  de_DE.UTF-8... done
Generation complete.
ubiquity-dm: Exiting with code 0