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 +'.