On 1/2/19 10:51 AM, David wrote:
On 1/2/19 10:42 AM, Dick Steffens wrote:
On 1/2/19 10:26 AM, David wrote:
<...>

Sounds like I need to figure out how to set DISPLAY.



Your sshd configuration may explicitly deny the variable from being set.

In my config file:

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

If you have a "no" (which I think is the default) that will probably be at least part the problem.

There are 22 lines commented out in the group where X11Forwarding lives. What I have for that is:

#X11Forwarding no

I uncommented that, and saved the file.

If you edit that file to read as I have it, you will need to restart the service.

I ran /etc/rc.d/rc.sshd restart then logged in from the Slackware machine to the Ubuntu machine.

Trying to run caja still results in "Could not parse arguments: Could not open display:"

echo $DISPLAY continues to show a blank line.

--
Regards,

Dick Steffens

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