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

X.Org X Server 1.21.1.3
X Protocol Version 11, Revision 0
Current Operating System: Linux kubuntu 5.15.0-25-generic #25-Ubuntu SMP Wed Mar 30 15:54:22 UTC 2022 x86_64
Kernel command line: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
xorg-server 2:21.1.3-2ubuntu2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.40.0
	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: Thu Jul 14 04:11:03 2022
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
ubiquity-dm: set vars
ubiquity-dm: pam_open_session
ubiquity-dm: dm-scripts
ubiquity-dm: start frontend kde_ui
ubiquity-dm: paint background
dbus-update-activation-environment: setting DISPLAY=:0
ubiquity-dm: add_ubiquity_kdedir
ubiquity-dm: start kwin
ubiquity-dm: start greeter
Warning: Setting a new default format with a different version or profile after the global shared context is created may cause issues with context sharing.
OpenGL vendor string:                   Intel
OpenGL renderer string:                 Mesa Intel(R) HD Graphics 2000 (SNB GT1)
OpenGL version string:                  3.1 Mesa 22.0.1
OpenGL shading language version string: 1.40
Driver:                                 Intel
GPU class:                              SandyBridge
OpenGL version:                         3.1
GLSL version:                           1.40
Mesa version:                           22.0.1
X server version:                       1.21.1
Linux kernel version:                   5.15
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
kwin_core: XCB error: 10 (BadAccess), sequence: 919, resource id: 752, major code: 142 (Composite), minor code: 2 (RedirectSubwindows)
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 26726, resource id: 4194486, major code: 18 (ChangeProperty), minor code: 0
ubiquity-dm: greeter exited with code 1
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 27696, resource id: 4194320, major code: 18 (ChangeProperty), minor code: 0
(II) Server terminated successfully (0). Closing log file.
ubiquity-dm: Exiting with code 1