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Newbie question: problems setting DISPLAY to X server

  
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jose_luis_fdez_diaz_news

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Since: Feb 24, 2005
Posts: 10



(Msg. 1) Posted: Mon Apr 18, 2005 11:38 pm
Post subject: Newbie question: problems setting DISPLAY to X server
Archived from groups: comp>os>linux>setup (more info?)
Hi,

On my local machine (llamas.hi.inet: Linux FC3):

[jdiaz@llamas ~]$ xhost +
access control disabled, clients can connect from any host
[jdiaz@llamas ~]$

On the remote machine:

opmxopge@sgbe2 : po_co_ordcorba.ss > export DISPLAY=llamas.hi.inet:0.0
opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
Error: Can't open display: llamas.hi.inet:0.0
opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
PING llamas.hi.inet: 56 data bytes
64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms
64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=1. time=1. ms
^C
----llamas.hi.inet PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/1
opmxopge@sgbe2 : po_co_ordcorba.ss >

Any hint ?

Thanks in advance,
Jose Luis.
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jose_luis_fdez_diaz_news

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Since: Feb 24, 2005
Posts: 10



(Msg. 2) Posted: Tue Apr 19, 2005 2:00 am
Post subject: Re: Newbie question: problems setting DISPLAY to X server [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Laurenz Albe wrote:
> jose_luis_fdez_diaz_news.DeleteThis@yahoo.es wrote:
> > On my local machine (llamas.hi.inet: Linux FC3):
> >
> > [jdiaz@llamas ~]$ xhost +
> > access control disabled, clients can connect from any host
> > [jdiaz@llamas ~]$
> >
> > On the remote machine:
> >
> > opmxopge@sgbe2 : po_co_ordcorba.ss > export
DISPLAY=llamas.hi.inet:0.0
> > opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
> > Error: Can't open display: llamas.hi.inet:0.0
> > opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
> > PING llamas.hi.inet: 56 data bytes
> > 64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms
>
> Possibilities:
> - 10.95.27.186 is not the X server (naming problem).
> - The X server is not listening on TCP port 6000.
> try a 'telnet llamas.hi.inet 6000' and see if you get an error.

opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
Trying 10.95.27.186...
telnet: Unable to connect to remote host: Connection refused
opmxopge@sgbe2 : bin >


On local it doesn't run neither:

[jdiaz@llamas etc]$ telnet localhost 6000
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused




> - The display is not started on :0
> Try with DISPLAY=:0.0 from the X server.
>
> Yours,
> Laurenz Albe


Regards,
Jose Luis.
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jose_luis_fdez_diaz_news

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Since: Feb 24, 2005
Posts: 10



(Msg. 3) Posted: Tue Apr 19, 2005 3:19 am
Post subject: Re: Newbie question: problems setting DISPLAY to X server [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
That was the problem.

Best Regards,
Jose Luis.


Laurenz Albe wrote:
> jose_luis_fdez_diaz_news.TakeThisOut@yahoo.es wrote:
> >>> Error: Can't open display: llamas.hi.inet:0.0
> >
> > opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
> > Trying 10.95.27.186...
> > telnet: Unable to connect to remote host: Connection refused
>
> Well, start your X server with TCP listening support.
> It is probably started with '-nolisten tcp' in some xserverrc file
> or similar.
>
> Yours,
> Laurenz Albe
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Laurenz Albe

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Since: Apr 11, 2005
Posts: 112



(Msg. 4) Posted: Tue Apr 19, 2005 8:27 am
Post subject: Re: Newbie question: problems setting DISPLAY to X server [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
jose_luis_fdez_diaz_news.RemoveThis@yahoo.es wrote:
> On my local machine (llamas.hi.inet: Linux FC3):
>
> [jdiaz@llamas ~]$ xhost +
> access control disabled, clients can connect from any host
> [jdiaz@llamas ~]$
>
> On the remote machine:
>
> opmxopge@sgbe2 : po_co_ordcorba.ss > export DISPLAY=llamas.hi.inet:0.0
> opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
> Error: Can't open display: llamas.hi.inet:0.0
> opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
> PING llamas.hi.inet: 56 data bytes
> 64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms

Possibilities:
- 10.95.27.186 is not the X server (naming problem).
- The X server is not listening on TCP port 6000.
try a 'telnet llamas.hi.inet 6000' and see if you get an error.
- The display is not started on :0
Try with DISPLAY=:0.0 from the X server.

Yours,
Laurenz Albe
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Laurenz Albe

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Since: Apr 11, 2005
Posts: 112



(Msg. 5) Posted: Tue Apr 19, 2005 9:25 am
Post subject: Re: Newbie question: problems setting DISPLAY to X server [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
jose_luis_fdez_diaz_news DeleteThis @yahoo.es wrote:
>>> Error: Can't open display: llamas.hi.inet:0.0
>
> opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
> Trying 10.95.27.186...
> telnet: Unable to connect to remote host: Connection refused

Well, start your X server with TCP listening support.
It is probably started with '-nolisten tcp' in some xserverrc file
or similar.

Yours,
Laurenz Albe
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Michael Heiming

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Since: Aug 19, 2003
Posts: 2577



(Msg. 6) Posted: Tue Apr 19, 2005 12:53 pm
Post subject: Re: Newbie question: problems setting DISPLAY to X server [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
In comp.os.linux.setup jose_luis_fdez_diaz_news RemoveThis @yahoo.es:

> [jdiaz@llamas ~]$ xhost +
> access control disabled, clients can connect from any host

This is a major security problem you are opening here, there's no
reason, simply use 'ssh' and request X11 forwarding, see 'man
ssh'. You don't need to care about $DISPLAY/xauthority, ports
blocked by some firewall and alike. Anything will be done for you
auto-magically and X11 securely tunneled from ssh, even through
multiple systems.

Good luck

[..]

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpunry RemoveThis @urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 48: bad ether in the cables
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