From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6771 invoked by alias); 24 Mar 2015 12:40:20 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 6762 invoked by uid 89); 24 Mar 2015 12:40:19 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.4 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.2 X-HELO: out3-smtp.messagingengine.com Received: from out3-smtp.messagingengine.com (HELO out3-smtp.messagingengine.com) (66.111.4.27) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Tue, 24 Mar 2015 12:40:17 +0000 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 2DA6D20ABB for ; Tue, 24 Mar 2015 08:40:13 -0400 (EDT) Received: from frontend1 ([10.202.2.160]) by compute5.internal (MEProxy); Tue, 24 Mar 2015 08:40:15 -0400 Received: from [192.168.1.102] (unknown [31.51.205.126]) by mail.messagingengine.com (Postfix) with ESMTPA id 44E44C00015; Tue, 24 Mar 2015 08:40:15 -0400 (EDT) Message-ID: <55115B29.8000904@dronecode.org.uk> Date: Tue, 24 Mar 2015 13:35:00 -0000 From: Jon TURNEY Reply-To: cygwin@cygwin.com User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Andrew DeFaria , cygwin@cygwin.com Subject: Re: X11Forward and xauth problems References: <55108046.1070206@dronecode.org.uk> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2015-03/txt/msg00410.txt.bz2 On 23/03/2015 21:27, Andrew DeFaria wrote: > On 3/23/2015 2:06 PM, Jon TURNEY wrote: >> On 23/03/2015 20:48, Andrew DeFaria wrote: >>> Normally I just turn on -X (or put X11Forward yes in ~/.ssh/config) but >>> that usually results in a noticeable delay in logging in and the >>> following error: >>> >>> Warning: untrusted X11 forwarding setup failed: xauth key data not >>> generated >>> Warning: No xauth data; using fake authentication data for X11 >>> forwarding. >> >> Firstly, if you don't want these warnings, use ssh -Y. >> >> (By using ssh -X, you are asking for something which the X server can't >> give you, hence the warnings. See >> http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-trusted-untrusted-x11-forwarding >> >> for more details) > > Yeah but -Y gives me the same thing: This is similar, but it is not the same. > Adefaria-lt:ssh -Y cm-app-ldev01 > Warning: No xauth data; using fake authentication data for X11 forwarding. > /usr/bin/xauth: unable to link authority file > /home/adefaria/.Xauthority, use /home/adefaria/.Xauthority-n > Cm-app-ldev01: I think this last message here is unusual, and is coming from xauth running on the remote server. Can you you give a few more details on what OS that is running? If you connect using ssh -vv -Y, you should be able to see the xauth commands that sshd is running, and if those, or some other step in the connection, is the cause of the delay. You might also try running those xauth commands in the terminal to investigate further. >>> Adefaria-lt:xhost + >>> access control disabled, clients can connect from any host >>> Adefaria-lt:ssh cm-app-ldev01 >>> Cm-app-ldev01:export DISPLAY=adefaria-lt:0 >>> Cm-app-ldev01:xclock >>> Error: Can't open display: adefaria-lt:0 >>> Cm-app-ldev01: >> >> If you want this to work, you will now (since X server 1.17) need to >> start the server with the option '-listen tcp'. > > Restarted Xwin with -multimonitor and -listen tcp. Now I get: Sorry for any ambiguity, but you have misunderstood what I wrote. If you want explicitly setting DISPLAY and allowing access using xhost to work, you must start the server with the option '-listen tcp'. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple