How do I run remote X application?

I have simple LAN and wish to run mozilla remotly. So far I have tried to
use ssh with the -X option. The following is a typical transaction.

root@cage # ssh -X piggy
Last login: Sat Mar 26 19:27:28 2005 from cage
Linux 22.4.26
root@PIGGY:~# mozilla
(mozillz-bin:14763):Gtk-WARNING **: cannot open display:

On Sun, 27 Mar 2005 01:51:32 GMT, sj wrote:
> I have simple LAN and wish to run mozilla remotly. So far I have tried to
> use ssh with the -X option.

Try -Y instead of -X to enable trusted X11 forwarding.

Bob Tennent wrote:

> On Sun, 27 Mar 2005 01:51:32 GMT, sj wrote:
> > I have simple LAN and wish to run mozilla remotly. So far I have tried
> > to use ssh with the -X option.
>
> Try -Y instead of -X to enable trusted X11 forwarding.


Bob thanks for the suggestion, unfortunately it doesn't work. ssh complains
that -Y is an illegal option and I don't see -Y listed in the man page?

In the mean time I have editied sshd_config on the remote machine to include
the line

ForwardX11 yes

But this also isnt working.

On Sun, 27 Mar 2005 01:51:32 +0000, sj wrote:

> I have simple LAN and wish to run mozilla remotly. So far I have tried to
> use ssh with the -X option. The following is a typical transaction.
>
> root@cage # ssh -X piggy
> Last login: Sat Mar 26 19:27:28 2005 from cage
> Linux 22.4.26
> root@PIGGY:~# mozilla
> (mozillz-bin:14763):Gtk-WARNING **: cannot open display:

Have you tried that as a normal user?

In comp.os.linux.networking sj <(E-Mail Removed)>:
> I have simple LAN and wish to run mozilla remotly. So far I have tried to
> use ssh with the -X option. The following is a typical transaction.

> root@cage # ssh -X piggy

Please, please don't run a browser as root unless there's a real
reason.

> Last login: Sat Mar 26 19:27:28 2005 from cage
> Linux 22.4.26
> root@PIGGY:~# mozilla
> (mozillz-bin:14763):Gtk-WARNING **: cannot open display:

You have no DISPLAY or it's wrong setup, try connecting with 'ssh
-vvv -X piggy' ans see if this gives any clues, post the output
if it doesn't tell you anything. What's the output of 'echo
$DISPLAY' on the remote system after login?

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo (E-Mail Removed) | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 458: Windows 2000 is still light years away from
the stability and reliability of UNIX systems.

>> root@cage # ssh -X piggy
>
> Please, please don't run a browser as root unless there's a real
> reason.
>

Thanks for the warning. I don't intend to use a browser as root... Piggy is
an experimental machine with nothing of value on it. Up to a few minutes
ago I didn't have a "normal" account on the machine.



>
> You have no DISPLAY or it's wrong setup, try connecting with 'ssh
> -vvv -X piggy' ans see if this gives any clues, post the output

Ok here are the x11 related lines using -vvv

debug2: x11_get_proto: /usr/X11R6/bin/xauth list :0.0 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug1: channel 0: request x11-req
debug1: channel 0: request shell
debug2: callback done
debug1: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel 0: rcvd adjust 131072


> if it doesn't tell you anything. What's the output of 'echo
> $DISPLAY' on the remote system after login?
>

DISPLAY has a value of 1 on piggy

In comp.os.linux.networking sj <(E-Mail Removed)>:
[..]

>> You have no DISPLAY or it's wrong setup, try connecting with 'ssh
>> -vvv -X piggy' ans see if this gives any clues, post the output

> Ok here are the x11 related lines using -vvv

> debug2: x11_get_proto: /usr/X11R6/bin/xauth list :0.0 2>/dev/null

xauth available, good.

> debug1: Requesting X11 forwarding with authentication spoofing.
> debug1: channel 0: request x11-req
> debug1: channel 0: request shell

Doesn't look that bad, even if you usually see a confirm from the
other side.

Can you check for these settings in sshd_config on the remote
side and adjust + restart/reload sshd and retry:

X11Forwarding yes
X11DisplayOffset 10

If this doesn't fix things you can try adding 'X11UseLocalhost
yes' or 'X11UseLocalhost no', depends on your ssh client whatever
you are using? 'ssh -V' should show.

[..]

> DISPLAY has a value of 1 on piggy

That's the problem, you should see something like this:

$ echo $DISPLAY
localhost:10.0

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo (E-Mail Removed) | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 11: magnetic interference from money/credit cards

Michael Heiming wrote:

> Doesn't look that bad, even if you usually see a confirm from the
> other side.
>
> Can you check for these settings in sshd_config on the remote
> side and adjust + restart/reload sshd and retry:
>
> X11Forwarding yes
> X11DisplayOffset 10
>
>
>
>> DISPLAY has a value of 1 on piggy
>
> That's the problem, you should see something like this:
>
> $ echo $DISPLAY
> localhost:10.0
>
That did it, thanks for your help!

On 2005-03-27, sj <(E-Mail Removed)> wrote:
> Michael Heiming wrote:
>
>> Can you check for these settings in sshd_config on the remote
>> side and adjust + restart/reload sshd and retry:
>>
>> X11Forwarding yes
>> X11DisplayOffset 10

[snip]

>> That's the problem, you should see something like this:
>>
>> $ echo $DISPLAY
>> localhost:10.0
>>
> That did it, thanks for your help!

Which did it, before my snip or after? If just modifying the remote
sshd_config file worked, then you're fine, but if you're setting
DISPLAY manually, then it's still not working right.

--keith

--
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(try just my userid to email me)
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see X- headers for PGP signature information

> Which did it, before my snip or after? If just modifying the remote
> sshd_config file worked, then you're fine, but if you're setting
> DISPLAY manually, then it's still not working right.
>
> --keith
>

The modification to sshd_config. I am not setting DISPLAY manually