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Re: cannot open display: localhost:0.0 [solved]




On 9/23/18 2:36 PM, Rob van der Putten wrote:
Hi there


On 23/09/2018 13:48, Grzegorz Sójka wrote:

I need to allow remote applications to connect to xorg. Since I log in using lxdm i have tcp_listen=1 in /etc/lxdm/lxdm.conf. Thus Xorg is running without -nolisten tcp flag. Unfortunately:

$ xhost +localhost; DISPLAY=localhost:0.0 xterm
localhost being added to access control list
xterm: Xt error: Can't open display: localhost:0.0

Any suggestions??

Did you check port 6000?
root@pc6:~# netstat -anp | grep 6000
tcp   0   0 0.0.0.0:6000   0.0.0.0:*   LISTEN   2684/Xorg
tcp6  0   0 :::6000        :::*        LISTEN   2684/Xorg

Bingo! The command gave me empty output. Now -nolisten tcp is the default Xorg behaviour. Thus, you need to add -listen tcp flag explicitly. I added:
arg=/usr/bin/X -background vt07 -listen tcp
to /etc/lxdm/lxdm.conf and now it works perfectly.

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