From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24370 invoked by alias); 11 Dec 2014 21:16:21 -0000 Mailing-List: contact cygwin-xfree-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-xfree-owner@cygwin.com Reply-To: cygwin-xfree@cygwin.com Mail-Followup-To: cygwin-xfree@cygwin.com Received: (qmail 24339 invoked by uid 89); 11 Dec 2014 21:16:20 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=2.0 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: nm30-vm10.bullet.mail.gq1.yahoo.com Received: from nm30-vm10.bullet.mail.gq1.yahoo.com (HELO nm30-vm10.bullet.mail.gq1.yahoo.com) (98.136.216.201) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Thu, 11 Dec 2014 21:16:17 +0000 Received: from [98.137.12.56] by nm30.bullet.mail.gq1.yahoo.com with NNFMP; 11 Dec 2014 21:16:15 -0000 Received: from [98.137.12.216] by tm1.bullet.mail.gq1.yahoo.com with NNFMP; 11 Dec 2014 21:16:15 -0000 Received: from [127.0.0.1] by omp1024.mail.gq1.yahoo.com with NNFMP; 11 Dec 2014 21:16:15 -0000 Received: by 216.39.60.214; Thu, 11 Dec 2014 21:16:15 +0000 Date: Thu, 11 Dec 2014 21:16:00 -0000 From: Don Webster Reply-To: Don Webster To: "cygwin-xfree@cygwin.com" Message-ID: <1064081870.21689.1418332471886.JavaMail.yahoo@jws10705.mail.gq1.yahoo.com> In-Reply-To: <5489ED06.5040606@dronecode.org.uk> References: <5489ED06.5040606@dronecode.org.uk> Subject: Re: remote xterm's can't open display after upgrade MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2014-12/txt/msg00025.txt.bz2 Jon, That worked! Thank you! Your awesomeness is awesome. I just edited /usr/bin/startxwin to have: #listenarg="-nolisten tcp"listenarg="" I think you were suggesting a more elegant solution, that I didn't grasp. I don't know if this is worthy of adding to the Upgrade section of the FAQ, because I did look there (and several other places) before posting in this forum. Thanks again. You're the best. don.. ----- Original Message ----- From: Jon TURNEY To: cygwin-xfree@cygwin.com Cc: paxguy@yahoo.com Sent: Thursday, December 11, 2014 2:14 PM Subject: Re: remote xterm's can't open display after upgrade On 11/12/2014 18:31, Don Webster wrote: > I needed to upgrade gs to gs 9.15, so I ran setup yesterday. It > wanted to update a whole bunch of stuff, including X. OK, fine, I > hadn't updated cygwin in quite a while, and I had other stuff to do. > > After the upgrade, I can't display remote xterms. OK, my old X > shortcut didn't work, but I found "XWin Server" and pinned it to my > task bar. I launch that and I have the X server running, and a local > xterm pops up. I ssh into my linux server, and run my xterm, and get > "can't open display". I did these steps. > > - turned off my Windows Firewall (I am on a safe, local network). - > launched XWin Server. > > In the xterm that popped up: > dcw@dcwdt02 ~ > $ xhost + > access control disabled, clients can connect from any host > > dcw@dcwdt02 ~ > $ ssh centos6 > Last login: Wed Dec 10 16:31:16 2014 from dcwdt02 > centos6% setenv DISPLAY 10.11.22.33:0.0 # I use tcsh > centos6% xterm > xterm Xt error: Can't open display: 10.11.22.33:0.0 > centos6% > > Is there something obvious? https://cygwin.com/ml/cygwin-xfree/2014-11/msg00029.html The relevant part is "startx and startxwin now pass '-nolisten tcp' to the server by default, which increases security in the X server by not opening a port to TCP connections. The '-listen' flag can be passed as a server argument to override this." Your choices are to add the '-listen' flag to the startxwin invocation, or (better) to use 'ssh -Y' and not explicitly set DISPLAY (See http://x.cygwin.com/docs/ug/using-remote-apps.html#using-remote-apps-ssh) -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/