CentOS - Apr 2020 - CentOS 8 and xhost

On Sun, 19 Apr, 2020 at 15:14:49 -0700, Jerry Geis
wrote:
> I am trying to run 'xhost +'  on CentOS 8 (such that I can grab a
screen
> shot)
> but its not letting me.
> 
> On boot of X I run the "xhost +"
> then later with SSH into hte box - I run
> export DISPLAY=:0.0
> gnome-screenshot -f jj.png
> and I get the cannot open display message.
> 
> This works on the older CentOS 7.  What is the magic for C8?
> Thanks,
> 
> Jerry
CentOS 8 runs GNOME on Wayland by default. X forwarding cannot work in
those circumstances. To change that, choose "GNOME on Xorg" after
clicking on the gear icon on the login screen.

I recommend running ssh with the -X or -Y flags when connecting to the
remote box. It's more secure than using 'xhost +'.

I am trying to run 'xhost +'  on CentOS 8 (such that I can grab a screen
shot)
but its not letting me.

On boot of X I run the "xhost +"
then later with SSH into hte box - I run
export DISPLAY=:0.0
gnome-screenshot -f jj.png
and I get the cannot open display message.

This works on the older CentOS 7.  What is the magic for C8?
Thanks,

Jerry

>CentOS 8 runs GNOME on Wayland by default. X forwarding cannot work in
>those circumstances. To change that, choose "GNOME on Xorg" after
>clicking on the gear icon on the login screen.
>I recommend running ssh with the -X or -Y flags when connecting to the
>remote box. It's more secure than using 'xhost +'.

Thanks any way to do that from command line or install option?

Jerry

I found it...
https://www.tecmint.com/configure-xorg-as-default-gnome-session/