Thanks for your answer. >> On my system, this fails to start an XFCE session with the error message >> "/usr/bin/startxfce4: X server already running on" (common error on the web) > The message is just a warning, it doesn't fail because of that. OK
>> What about changing "Exec=startxfce4" by "Exec=xfce4-session"? > No, it won't work. It indeed works . With "Exec=startxfce4", I cannot start XFCE (comes back to lightdm just after password). With "Exec=xfce4-session" it works just fine.
