Linux-Desktop:/home/elkaktus # update-alternatives --config default-displaymanager
There are 3 choices for the alternative default-displaymanager (providing /usr/lib/X11/displaymanagers/default-displaymanager).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/lib/X11/displaymanagers/sddm 25 auto mode
1 /usr/lib/X11/displaymanagers/console 5 manual mode
2 /usr/lib/X11/displaymanagers/sddm 25 manual mode
3 /usr/lib/X11/displaymanagers/xdm 10 manual mode
Press <enter> to keep the current choice[*], or type selection number:
jsc@localhost:~> cat /etc/sysconfig/keyboard
## Path: Hardware/Keyboard
## Description: Keyboard settings for the text console
## ServiceRestart: kbdsettings
#
## Type: integer
## Default:
#
# Keyboard delay time in ms (250, 500, 750, 1000)
KBD_DELAY=""
## Type: string(2.0,2.1,2.3,2.5,2.7,3.0,3.3,3.7,4.0,4.3,4.6,5.0,5.5,6.0,6.7,7.5,8.0,8.6,9.2,10.0,10.9,12.0,13.3,15.0,16.0,17.1,18.5,20.0,21.8,24.0,26.7,30.0)
## Default:
#
# Keyboard repeat rate (2.0 - 30.0)
KBD_RATE=""
## Type: list(bios,yes,no)
## Default: bios
#
# NumLock on? ("yes" or "no" or "bios" for BIOS setting)
# "bios" requires access to BIOS settings. Does not work with Secure Boot and falls back to "no" there.
# This setting may interfere with GNOME /org/gnome/settings-daemon/peripherals/keyboard/remember-numlock-state DConf key.
KBD_NUMLOCK="no"
Problembehebung
Unter Xfce bzw. Xubuntu sollte man prüfen, ob unter "Einstellungen → Barrierefreiheit → Maus" die Mausemulation deaktiviert ist. Auch bei anderen Desktop-Umgebungen können bestimmte Einstellungen zur Barrierefreiheit für Verwirrung sorgen (meist sind diese aus Versehen aktiviert worden).