Переключение между Gnome и KDE4

cat /etc/sysconfig/displaymanager
cat /etc/sysconfig/windowmanager

 linux-enterprise:/home/home # cat /etc/sysconfig/displaymanager
## Path:    Desktop/Display manager
## Description:    settings to generate a proper displaymanager config
## Type:    string(kdm,kdm3,kdm4,xdm,gdm,wdm,console)
## Default:    ""
#
# Here you can set the default Display manager (kdm/xdm/gdm/wdm/console).
# all changes in this file require a restart of the displaymanager
#
DISPLAYMANAGER="gdm"
## Type:    yesno
## Default:    no
#
# Allow remote access (XDMCP) to your display manager (xdm/kdm/gdm). Please note
# that a modified kdm or xdm configuration, e.g. by KDE control center
# will not be changed. For gdm, values will be updated after change.
# XDMCP service should run only on trusted networks and you have to disable
# firewall for interfaces, where you want to provide this service.
#
DISPLAYMANAGER_REMOTE_ACCESS="no"
## Type:    yesno
## Default:    no
#
# Allow remote access of the user root to your display manager. Note
# that root can never login if DISPLAYMANAGER_SHUTDOWN is "auto" and
# System/Security/Permissions/PERMISSION_SECURITY is "paranoid"
#
DISPLAYMANAGER_ROOT_LOGIN_REMOTE="no"
## Type:    yesno
## Default:    yes
#
# Let the displaymanager start a local Xserver.
# Set to "no" for remote-access only.
# Set to "no" on architectures without any Xserver (e.g. s390/s390x).
#
DISPLAYMANAGER_STARTS_XSERVER="yes"
## Type:        yesno
## Default:     no
#
# TCP port 6000 of Xserver. When set to "no" (default) Xserver is
# started with "-nolisten tcp". Only set this to "yes" if you really
# need to. Remote X service should run only on trusted networks and
# you have to disable firewall for interfaces, where you want to
# provide this service. Use ssh X11 port forwarding whenever possible.
#
DISPLAYMANAGER_XSERVER_TCP_PORT_6000_OPEN="no"
## Type:    string
## Default:
#
# Define the user whom should get logged in without request. If string
# is empty, display standard login dialog.
#
DISPLAYMANAGER_AUTOLOGIN="home"
## Type:        yesno
## Default:     no
#
# Allow all users to login without password, but ask for the user, if
# DISPLAYMANAGER_AUTOLOGIN is empty.
#
DISPLAYMANAGER_PASSWORD_LESS_LOGIN="yes"
## Type:        yesno
## Default:     no
#
# Display a combobox for Active Directory domains.
#
DISPLAYMANAGER_AD_INTEGRATION="no"
## Type:    list(root,all,none,auto)
## Default: auto
#
# Determine who will be able to shutdown or reboot the system in kdm
# and gdm. Valid values are: "root" (only root can shutdown), "all"
# (everybody can shutdown), "none" (nobody can shutdown from
# displaymanager), "auto" (follow
# System/Security/Permissions/PERMISSION_SECURITY to decide: "easy
# local" is equal to "all", everything else is equal to "root"). Note
# that remote user can never shutdown in GDM.
#
DISPLAYMANAGER_SHUTDOWN="auto"
## Type:        string
## Default:     ""
#
# Mode to configure on output devices by default
# (RANDR 1.2 compatible drivers only).
#
# If set to "auto", DISPLAYMANAGER_RANDR_MODE_auto is used on laptops, and
# the empty string on workstations.
#
# The output is not explicitly enabled (read: disabled) if set to an empty
# string.
# If the variable contains a fully configured modeline (see default of
# DISPLAYMANAGER_RANDR_MODE_auto), the mode is defined and set.
# If the variable contains a mode name only, the mode has to be defined
# already.
#
# If a monitor is attached during Xstartup, or when invoking "xrandr --auto"
# during runtime, the output is correctly configured and a mode is
# automatically selected if none has been used so far.
#
# Variables are checked according to their extension for
#    VGA DVI_I DVI_D DVI_A Composite S_Video Component LFP Proprietary
#
DISPLAYMANAGER_RANDR_MODE_VGA=""
## Type:        string
## Default:     "1024x768_60 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync"
#
# Mode to use for laptops for DISPLAYMANAGER_RANDR_MODE_* on laptops only,
# when the according variable is set to "auto".
# (RANDR 1.2 compatible drivers only).
#
DISPLAYMANAGER_RANDR_MODE_auto="1024x768_60 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync"
## Path:        Desktop/Display manager
## Type:        string(Xorg)
## Default:     "Xorg"
#
DISPLAYMANAGER_XSERVER=Xorg
## Path:    Desktop/Display manager
## Description: settings to generate a proper displaymanager config
## Config:      kdm3
## Type:    string
## Default: 
#
# space separated list of users for which icons should be shown in KDM
# if empty, then take system defaults
#
KDM_USERS=""
## Type:    string
## Default: 
#
# Special greeting words in kdm
#
KDM_GREETSTRING=""
## Type:        string
## Default: 
#
# Defines extra Server Arguments given to the kdm display manager when
# starting a local display. Useful to override e.g. the -dpi setting.
# 
DISPLAYMANAGER_KDM_LOCALARGS=""
## Type:        string
## Default:     SUSE
#
# Define the theme to be used by kdm. If empty, the traditional login
# window is used (which lacks some features)
# 
DISPLAYMANAGER_KDM_THEME="SUSE"
## Type:    yesno
## Default:    yes
#
# Allow local access of the user root to your display manager. Note
# that root can never login if DISPLAYMANAGER_SHUTDOWN is "auto" and
# System/Security/Permissions/PERMISSION_SECURITY is "paranoid".
# This settings currently works only with KDM.
#
DISPLAYMANAGER_ROOT_LOGIN_LOCAL="yes". 

 linux-enterprise:/home/home # cat /etc/sysconfig/windowmanager
## Type:    string
## Default:
## Path: Desktop
## Description: default mouse cursor theme
#
# Name of mouse cursor theme for X11. Possible themes can be found
# in /usr/share/icons/
#
X_MOUSE_CURSOR="DMZ"
## Path:    Desktop/Window manager
## Description:    
## Type:    string(gnome,startkde,startkde3,startxfce4,twm)
## Default:    kde
## Config:      profiles,kde,susewm
#
# Here you can set the default window manager (kde, fvwm, ...)
# changes here require at least a re-login
DEFAULT_WM="gnome"
## Type:    yesno
## Default:    yes
#
# install the SuSE extension for new users
# (theme and additional functions)
#
INSTALL_DESKTOP_EXTENSIONS="yes"
## Type:        yesno
## Default:     yes
KDE_USE_IPV6="yes"
## Path:        Desktop
## Description: prepare global sycoca database for faster first startup
## Type:        list(yes,initial,no)
## Default:     initial
#
# building a global sycoca database, which can be used at first user
# login in KDE
#
KDE_BUILD_GLOBAL_SYCOCA="initial"
## Type:        yesno
## Default:     yes
#
# IDN support can get disabled to avoid DNS phishing for example.
#
KDE_USE_IDN="yes". 

$ cat ~/.dmrc

Session=kde4

Session=gnome

DISPLAYMANAGER="gdm"

DISPLAYMANAGER="kdm"