I've gotten Xpra to work with Xdummy on lubuntu 16.04 by by starting
Xpra on a virtual console. This may not support your use case but it
works for mine.
INSTALLATION
sudo apt-get install xpra
apt list xpra
xpra/xenial,now 0.15.8+dfsg-1 amd64 [installed]
sudo usermod -aG tty <USERNAME>
USE FROM DESKTOP
Workaround for 16.04 issues. Start xpra on a /dev/tty
ll /dev/tty63
crw-r----- 1 root tty 4, 63 Jul 15 17:34 /dev/tty63
#group needs rw access to openvt tty
sudo chmod 660 /dev/tty63
ll /dev/tty63
crw-rw---- 1 root tty 4, 63 Jul 15 17:34 /dev/tty63
openvt -c 63 -f -- xpra start :80 --daemon=no
START WITH BOOT
[Unit]
Description=Xpra server
[Service]
Type=simple
Environment=TTYNum=63 DISPLAY=:90
#openvt will execute as root so requires no permission change on /dev/tty##
#then sudo to user running xpra
ExecStart=/bin/openvt -c $TTYNum -f -v -w -- /usr/bin/sudo --user <USERNAME>
--login /usr/bin/xpra start $DISPLAY --daemon=no
ExecStop=/usr/bin/sudo --user <USERNAME> --login /usr/bin/xpra stop
$DISPLAY
[Install]
WantedBy=graphical.target
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https://bugs.launchpad.net/bugs/1589447
Title:
Xdummy cannot be used in Xenial
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-dummy/+bug/1589447/+subscriptions
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