No display from a remote computer

[Pavel Sanda]

On Thu, Oct 08, 2020 at 02:39:36PM +0000, Jacques B. Siboni wrote:
> I try to run it through a remote display on another Ubuntu computer.
> I use putty to connect; xterm and other xwindow applications run fine. (gimp for
> instance)
> 
> The DISPLAY variable is set to localhost:11.0 which Xwindow apps appreciate 
> 
> When I run lyx I can see it is running on the processes list but there is no
> display. It just stays like that.
> 
> Is there a hidden option or what?
> 
> Does it ring a bell?

No, but I do not use putty. Maybe the 11.0 display is not a correct one?
Anyway, if you just use normal console and connect via 
ssh -YC your_debian_machine
and run LyX afterwards, what happens?

Pavel