And finally I remembered what I did for 12.04 two years ago: amend /etc/X11/xinitrc to read:
#!/bin/sh # /etc/X11/xinit/xinitrc # set variables, invoke global X session script STARTUP=/usr/bin/startxfce4 DESKTOP_SESSION=xubuntu . /etc/X11/Xsession -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1296106 Title: startx -- :1 black screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1296106/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp