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re: xhost: cannot connect to X server

On Sun, Mar 15, 2009 at 22:05:20 +0100, 
Dieder Vervoort wrote: 
 > Florian Kulzer wrote: 
 >> On Sat, Mar 14, 2009 at 23:22:32 +0100, Dieder Vervoort wrote: 
 >>> I can' t make xhost to work. 
 >>> I searched around but couldn 't find a solution. 
>>> dieder@koala:~$ xhost + 
 >>> access control disabled, clients can connect from any host 
>> If your goal is to run X applications via ssh, then I would try this: 
>> http://www.debian.org/doc/manuals/reference/ch-tune.en.html#s-xssh 
> Many thanks, because the remote system is light, I do not prefer to use   
 > SSH ( sorry, the line telenet was missing in the problem   
 > description)) 
 > When I telnet from a Slackware client to the remote host running Lenny +   
 > JWM-desktop it is working fine ! 
 > So the problem is client pc running Lenny + KDE + xhost +  does not   
 > accept  incoming  TCP + X 
The first thing to check is if X really was started without "-nolisten 
$ ps -ef | grep "[/]bin/X " 
 root      9482  9480  0 22:49 tty7     00:00:01 /usr/bin/X -br :0 vt7 -auth /var/run/xauth/A:0-qdt4bc 
...and if X is actually listening on port 6000: 
# netstat -plant | grep 6000 
 tcp        0      0  *               LISTEN      9482/X 
 tcp6       0      0 :::6000                 :::*                    LISTEN      9482/X 
If that has gone wrong than you did not remove the "-nolisten tcp" 
 option from the relevant file; this depends on how you start X. For 
 example, if you use KDM to start your X session then you have to change 
ServerArgsLocal=-nolisten tcp 
in /etc/kde3/kdm/kdmrc. 
If you can confirm that your server is listening on port 6000 then you 
 probably should check if you have a local iptables rule that blocks 
 connections to this port. 
 Regards,            | http://users.icfo.es/Florian.Kulzer 
           Florian   | 
Hi Florian,

I double checked kdmrc and xserverrc, and these must be right.

I have ServerArgsLocal= 
and -nolisten TCP removed from xserverrc.

Unfortunatly I have forgotten to run your cli commands,

removed KDE and installed Gnome, still not functioning....
( I am going to reinstall it)

But I couldn't wait 

I have tested the local function from 2 other pc's

 Etch + Gnome  = OK
 Slackware + KDE = Ok there was no need to modify kdmrc !

The pleasant surprise: in my local-X I have not only the webrowser where I can
choose a streaming, and the VLC console pops up on my local host as a child of the browser window !  

So what is working:
Remote: old portable Pentium II 66Mhz 96 Mb Ram Debian Lenny + JWM + sound card.
Local in xterm: xhost + 
                telnet to Remote export Dispalay > Konqueror + VLC 

Many Thanks, I am going to try the Lenny / KDE later


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