To create your own session with customized configuration, follow these steps:
Create a .desktop file in /etc/X11/sessions/new-session.desktop. Make sure that the file specifies the following entries:
[Desktop Entry] Encoding=UTF-8 Type=Application Name=Custom session Comment=This is our custom session Exec=gnome-session --session=new-session
The Exec entry specifies the command, possibly with arguments, to execute. You can run the custom session with the gnome-session --session=new-session command.
For more information on the parameters that you can use with gnome-session, see the gnome-session man page.
Create a custom session file in /usr/share/gnome-session/sessions/new-session.session where you can specify the name and required components for the session:
[GNOME Session] Name=Custom Session RequiredComponents=gnome-shell-classic;gnome-settings-daemon;
Note that any item that you specify in RequiredComponents needs to have its corresponding .desktop file in /usr/share/applications/.
After configuring the custom session files, the new session will be available in the session list on the GDM login screen.
On a Debian or Debian-based system, the following error may occur:
Xsession: unable to launch "" Xsession --- "" not found; falling back to default session.
Should this happen to you, follow these steps to change the /etc/X11/Xsession.d/20x11-common_process-args file:
Change STARTUP_FULL_PATH=$(/usr/bin/which "$1"|| true) to STARTUP_FULL_PATH=$(/usr/bin/which $1 || true)
Change STARTUP="$1" to STARTUP=$1
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