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 +'.