سلام
بله میشه، اگر دسکتاپ جدید رو به صورت کامل نصب کنید فرقی ندارن، بعد از نصب باید log out کنین و همیشه بعد از بوت در هنگام log in دسکتاپ مورد نظر رو انتخاب میکنین.
برای این که ببینین با چه دستوری نصب میشه میتونین در گوگل سرچ کنید یا در ترمینال با apt سرچ کنید یا software center، من از دبیان استفاده میکنم با apt سرچ کردم:
sudo apt-cache search xfce | grep xfce
کلی خروجی بر گردوند که شامل نرم افزار های مربوط به xfce هم میشه از جمله بازی ها و ... :cairo-dock-xfce-integration-plug-in - Cairo-dock - Xfce integration plug-in
education-desktop-xfce - Debian Edu Xfce desktop applications
desktopnova-module-xfce - Xfce module for DesktopNova
gtk2-engines-xfce - GTK+-2.0 theme engine for Xfce
gtk3-engines-xfce - GTK+-3.0 theme engine for Xfce
libxfce4ui-1-0 - widget library for Xfce
libxfce4ui-1-dbg - debugging symbols for libxfce4ui
libxfce4ui-1-dev - Development files for libxfce4ui
libxfce4ui-utils - Utility files for libxfce4ui
libxfce4ui-utils-dbg - debugging symbols for libxfce4ui-utils
xfce-keyboard-shortcuts - xfce keyboard shortcuts configuration
libxfce4util-bin - tools for libxfce4util
libxfce4util-common - common files for libxfce4util
libxfce4util-dev - Development files for libxfce4util6
libxfce4util6 - Utility functions library for Xfce4
libxfce4util6-dbg - debugging informations for libxfce4util6
libxfcegui4-4 - Basic GUI C functions for Xfce4
libxfcegui4-4-dbg - debugging informations for libxfcegui4
libxfcegui4-dev - Development files for libxfcegui4-4
live-image-xfce-desktop - Live System Image Components (Xfce desktop)
task-xfce-desktop - Xfce desktop environment
xfce4 - Meta-package for the Xfce Lightweight Desktop Environment
xfce4-dbg - meta-package for debugging symbols in Xfce
xfce4-appfinder - Application finder for the Xfce4 Desktop Environment
xfce4-artwork - additional artwork for the Xfce4 Desktop Environment
xfce4-battery-plugin - battery monitor plugin for the Xfce4 panel
xfce4-cellmodem-plugin - cellular modem plugin for the Xfce4 panel
xfce4-clipman - clipboard history utility
xfce4-clipman-plugin - clipboard history plugin for Xfce panel
xfce4-cpufreq-plugin - cpufreq information plugin for the Xfce4 panel
xfce4-cpugraph-plugin - CPU load graph plugin for the Xfce4 panel
xfce4-datetime-plugin - date and time plugin for the Xfce4 panel
xfce4-dev-tools - Script to help building Xfce from git
xfce4-dict - Dictionary plugin for Xfce4 panel
xfce4-diskperf-plugin - disk performance display plugin for the Xfce4 panel
xfce4-fsguard-plugin - filesystem monitor plugin for the Xfce4 panel
xfce4-genmon-plugin - Generic Monitor for the Xfce4 panel
xfce4-goodies - enhancements for the Xfce4 Desktop Environment
xfce4-hdaps - plugin to indicate the status of HDAPS for the Xfce4 panel
xfce4-indicator-plugin - plugin to display information from applications in the Xfce4 panel
xfce4-linelight-plugin - Search plugin for Xfce panel
xfce4-mailwatch-plugin - mail watcher plugin for the Xfce4 panel
xfce4-messenger-plugin - Dbus messages plugin for xfce4-panel
xfce4-mixer - Xfce mixer application
xfce4-mount-plugin - mount plugin for the Xfce4 panel
xfce4-mpc-plugin - Xfce panel plugin which serves as client for MPD music player
xfce4-netload-plugin - network load monitor plugin for the Xfce4 panel
xfce4-notes - Notes application for the Xfce4 desktop
xfce4-notes-plugin - Notes plugin for the Xfce4 desktop
xfce4-notifyd - simple, visually-appealing notification daemon for Xfce
xfce4-panel - panel for Xfce4 desktop environment
xfce4-panel-dbg - debugging informations for xfce4-panel
xfce4-panel-dev - Xfce4 panel development files
xfce4-places-plugin - quick access to folders, documents and removable media
xfce4-power-manager - power manager for Xfce desktop
xfce4-power-manager-data - power manager for Xfce desktop, arch-indep files
xfce4-power-manager-plugins - power manager plugins for Xfce panel
xfce4-quicklauncher-plugin - rapid launcher plugin for the Xfce4 panel
xfce4-radio-plugin - v4l radio control plugin for the Xfce4 panel
xfce4-screenshooter - screenshots utility for Xfce
xfce4-screenshooter-plugin - transitional dummy package for xfce4-screenshooter
xfce4-sensors-plugin - hardware sensors plugin for the Xfce4 panel
xfce4-session - Xfce4 Session Manager
xfce4-session-dbg - Xfce4 Session Manager (debug symbols)
xfce4-settings - graphical application for managing Xfce settings
xfce4-smartbookmark-plugin - search the web via the Xfce4 panel
xfce4-systemload-plugin - system load monitor plugin for the Xfce4 panel
xfce4-taskmanager - process manager for the Xfce4 Desktop Environment
xfce4-terminal - Xfce terminal emulator
xfce4-terminal-dbg - Xfce terminal emulator - debugging symbols
xfce4-timer-plugin - timer plugin for Xfce panel
xfce4-verve-plugin - Verve (command line) plugin for Xfce panel
xfce4-volumed - volume keys daemon
xfce4-wavelan-plugin - wavelan status plugin for the Xfce4 panel
xfce4-weather-plugin - weather information plugin for the Xfce4 panel
xfce4-whiskermenu-plugin - Alternate menu plugin for the Xfce desktop environment
xfce4-wmdock-plugin - Compatibility layer for running WindowMaker dockapps on Xfce
xfce4-xkb-plugin - xkb layout switch plugin for the Xfce4 panel
xfdesktop4 - xfce desktop background, icons and root menu manager
xfdesktop4-data - xfce desktop background, icons and root menu (common files)
من از توضیحاتی که داده دو مورد رو مربوط به دسکتاپ دیدم :
xfce4
task-xfce-desktop
حالا با دستور:sudo apt-cache show task-xfce-desktop
توضیحات مربوط پکیج ها رو میبینم. که در مورد این دو پکیج دومی کاملتر از اولی هست و گفته که شامل برنامه های کاربردی دسکتاپ دبیان هم میشه.
برای دسکتاپ های دیگه هم میشه سرچ کرد ولی به طور کلی میشه دسکتاپ رو کامل و با برنامه های جانبی نصب کرد که اینجوری میشه مثل اینکه از اول xubuntuنصب کرده باشید یا اینکه فقط خودش رو بدون مخلفات نصب کرد.