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From: "Waltz, James" <JWaltz AT som DOT umaryland DOT edu>
To: Jack <ostroffjh AT users DOT sourceforge DOT net>
CC: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Re: xhost: unable to open display ""
Date: Wed, 24 Jan 2018 14:37:32 +0000
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Hi-

The solution was stupider than I thought:
1. I thought my DISPLAY was set, but it actually wasn’t. It worked with “:0.0”.
2. “ssh -Y” worked, whereas “ssh -X” did not.

Voila! (so far)

Thanks for your help, guys.

Jim Waltz

Sent from my iPhone

On Jan 23, 2018, at 22:48, Jack <ostroffjh AT users DOT sourceforge DOT net<mailto:ostroffjh AT users DOT sourceforge DOT net>> wrote:

On 2018.01.23 19:57, Mark Geisert wrote:
Waltz, James wrote:
Hi-
I think that I have installed all the necessary packages, but I still get the above error, when I type “xhost +” on my local machine.
I am also still getting a “cannot open display: localhost:10.0” error.
This is DESPITE the fact that:
- I set DISPLAY to “localhost:10.0”
- X11Forwarding is set to “yes” in the sshd_config file
- I changed the “hosts” file, under /etc to have actual IP addresses.
Any idea why this might be happening?
Yes.  Change that "10" to "0".  So it's "localhost:0.0" or even ":0.0".
Should work much better.... :)
Unless ssh is involved, which was not stated, but I suspect might be part of the issue.

Jack
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