ssh -X remote does not work due to problem with xauth

[Lowell Gilbert]

Matthias Apitz <guru at unixarea.de> writes:

> El día miércoles, mayo 09, 2018 a las 02:18:36p. m. -0000, Christian Weisgerber escribió:
>
>> On 2018-05-09, Matthias Apitz <guru at unixarea.de> wrote:
>> 
>> > When I launch 'ssh -X remote host' to get X11 forwarded to my workstation
>> > this does not work, i.e. does not produce a DISPLAY env on the remote
>> > host and says:
>> 
>> Is X11Forwarding enabled in /etc/ssh/sshd_config on the remote host?
>> 
>> > $ ssh -X apitzm at srap16dxr1
>> > Warning: untrusted X11 forwarding setup failed: xauth key data not generated
>> 
>> That's exactly the error you get if X11Forwarding is off on the
>> remote host.
>
> X11Forwarding is definitely enabled on the remote server. Other users in
> my company network who are coming from Ubuntu workstations to the same
> server do not face this problem.

Have you tried increasing the verbosity on the ssh session?
And if possible, on the sshd at the other end?