On Tue, Jul 27, 2021 at 10:18 PM Skip Montanaro
<skip.montanaro@gmail.com> wrote:
>
> > $ ssh -X werner@192.168.10.100
> > $ emacs
> >
> > At this moment, I noticed the following information:
> >
> > Display localhost:10.0 unavailable, simulating -nw
>
> Are you able to run other X-loving applications on the remote host?
> Maybe substitute "xeyes" or "xterm" for "emacs." Also, run ssh in
> verbose mode (-v) to see if it gives you clues about why X forwarding
> is (apparently) disabled.

I run ssh in verbose mode (-v):

$ ssh -vX werner@192.168.10.100

Then xterm also fails to open display, and it says that X11 connection
rejected because of wrong authentication. But I've enabled the
`X11Forwarding' option for sshd:

$ grep ^X11Forwarding /etc/ssh/sshd_config
X11Forwarding yes

So I still can't figure out what's the problem. I attached the error
message here.

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province