Re: Problem opening x-window over an ssh connection

[Gustavo Seabra]

Well,

Just in case anyone runs into the same problem in the future, mine was solved 
by adding the line:

127.0.0.1   localhost.localdomain

to /etc/hosts.

Thanks,
—
Gustavo Seabra.



> Em 16 de fev de 2018, à(s) 16:15, Ken Cunningham 
>  escreveu:
> 
> This happens recurrently to me, usually after significant updates. 
> 
> The last time was some months ago, so I forget exactly what I did, but it 
> involved the location of xauth and the ssh config on the target machine, if I 
> recall correctly.
> 
> So that's where I would start to google, (and will, the next time I have this 
> issue).
> 
> I hope this helps.
> 
> Ken
> 
> 
> On 2018-02-16, at 10:33 AM, Gustavo Seabra wrote:
> 
>> Hi all,
>> 
>> I understand this may not be a real Macports problem, but I suspect someone 
>> here may know the solution. I have googled a bit about this, but the 
>> solutions I found do not really apply to that problem. Here it is:
>> 
>> I have 3 machines:
>> 
>> A: My Mac
>> B: A Unix machine that serves as firewall to other computers
>> C: The computer I want to access.
>> 
>> SO, If I do:
>> 
>> A]$ ssh -Y B
>> B]$ echo $DISPLAY
>> localhost:10.0
>> B]$ xmgrace
>> 
>> I get a nice window from xmgrace, as expected.
>> 
>> However, If I try to open xmgrace from C using B as a jump, I get:
>> 
>> A]$ ssh -Y B
>> B]$ echo $DISPLAY
>> localhost:10.0
>> B]$ ssh -Y C
>> C]$ echo $DISPLAY
>> localhost:10.0
>> C]$ xmgrace
>> Can't open display
>> Failed initializing GUI, exiting
>> C]$
>> 
>> I suspect there’s something ill-configured in C, but don’t know what could 
>> it be or where to look. Could someone there please help me here?
>> 
>> Thanks,
>> —
>> Gustavo Seabra.
>> 
>> 
>> 
> 

Problem opening x-window over an ssh connection

[Gustavo Seabra]

Hi all,

I understand this may not be a real Macports problem, but I suspect someone 
here may know the solution. I have googled a bit about this, but the solutions 
I found do not really apply to that problem. Here it is:

I have 3 machines:

A: My Mac
B: A Unix machine that serves as firewall to other computers
C: The computer I want to access.

SO, If I do:

A]$ ssh -Y B
B]$ echo $DISPLAY
  localhost:10.0
B]$ xmgrace

I get a nice window from xmgrace, as expected.

However, If I try to open xmgrace from C using B as a jump, I get:

A]$ ssh -Y B
B]$ echo $DISPLAY
  localhost:10.0
B]$ ssh -Y C
C]$ echo $DISPLAY
  localhost:10.0
C]$ xmgrace
  Can't open display
  Failed initializing GUI, exiting
C]$

I suspect there’s something ill-configured in C, but don’t know what could it 
be or where to look. Could someone there please help me here?

Thanks,
—
Gustavo Seabra.