networking - Cannot Get Xdmx to work with two Ubuntu Computers (xinit error) - Ask Ubuntu

i have 2 computers running ubuntu 16.04 unity, , i'd use distributed multihead (xdmx) software in order use 1 of computers second monitor, instead of using 2 computers synergy. replicated error @ work , home (i have 2 computers each location). first, on both machines installed xdmx:

sudo apt install xdmx 

on slave, added line xserver-allow-tcp=true @ end of /etc/lightdm/lightdm.conf slave listen host host can grab display. restart slave in order have take effect. on both machines, safe, in order let x screen grabbed, do

xhost + 

in order make sure slave listening host , can grab x display host, type on host telnet 192.168.99.20 6000 , works (192.168.99.20 ip address of slave). finally, on host do

startx -- /usr/bin/x11/xdmx :1 -display :0 -display 192.168.99.20:0 -ignorebadfontpaths +xinerama -norender 

both screens go black few seconds, , come on , see lot of output, error @ end:

xinit: xfree86_vt property unexpectedly has 0 items instead of 1   xinit: connection x server lost    waiting x server shut down   couldn't file descriptor referring console 

any or suggestions have amazing, thanks!