From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17344 invoked by alias); 17 Sep 2014 13:35:12 -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 17312 invoked by uid 89); 17 Sep 2014 13:35:10 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.7 required=5.0 tests=AWL,BAYES_50,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 X-HELO: rgout0507.bt.lon5.cpcloud.co.uk Received: from rgout0507.bt.lon5.cpcloud.co.uk (HELO rgout0507.bt.lon5.cpcloud.co.uk) (65.20.0.228) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 17 Sep 2014 13:35:09 +0000 X-CTCH-RefID: str=0001.0A090205.54198E04.0038,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-Junkmail-Premium-Raw: score=28/50,refid=2.7.2:2014.9.4.101820:17:28.905,ip=86.146.66.128,rules=__MOZILLA_MSGID, __HAS_MSGID, __SANE_MSGID, __HAS_FROM, __HAS_REPLYTO, __USER_AGENT, __MOZILLA_USER_AGENT, __MIME_VERSION, __TO_MALFORMED_2, __TO_NO_NAME, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __IN_REP_TO, __CT, __CT_TEXT_PLAIN, __CTE, __ANY_URI, __URI_NO_MAILTO, __URI_NO_WWW, __CP_MEDIA_BODY, __CP_URI_IN_BODY, __SUBJ_ALPHA_NEGATE, __FORWARDED_MSG, BODYTEXTP_SIZE_3000_LESS, BODY_SIZE_2000_2999, __MIME_TEXT_ONLY, RDNS_GENERIC_POOLED, __URI_NS, SXL_IP_DYNAMIC[128.66.146.86.fur], HTML_00_01, HTML_00_10, BODY_SIZE_5000_LESS, RDNS_SUSP_GENERIC, RDNS_SUSP, REPLYTO_FROM_DIFF_ADDY, BODY_SIZE_7000_LESS X-CTCH-Spam: Unknown Received: from [192.168.1.93] (86.146.66.128) by rgout05.bt.lon5.cpcloud.co.uk (8.6.122.06) (authenticated as jonturney@btinternet.com) id 5405C7D001D49549; Wed, 17 Sep 2014 14:35:00 +0100 Message-ID: <54198DFD.6080804@dronecode.org.uk> Date: Wed, 17 Sep 2014 13:35:00 -0000 From: Jon TURNEY Reply-To: cygwin-xfree@cygwin.com User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 MIME-Version: 1.0 To: cygwin-xfree@cygwin.com CC: mathog@caltech.edu Subject: Re: Possible X11 server bug References: In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2014-09/txt/msg00017.txt.bz2 On 05/09/2014 17:55, mathog wrote: > I have run into an issue which _may_ indicate a bug in the cygwin X11 > server. The issue is documented here: > > https://bugs.launchpad.net/inkscape/+bug/1365153 > > In brief, for certain test files viewed in Inkscape (current trunk at > least) over a putty ssh tunnel from an Ubuntu 12.04lts system to the > cygwin 1.14.1.0 X11 server there are glitches in the image when it is > zoomed in and out. This does not occur if the same program is run > locally on the console of the test machine. Thanks for reporting this problem. It's not quite clear, but I think you are saying that it renders correctly when run locally on the Ubuntu 12.04 system? There are a couple of possible variables, which might affect things The version of the X server may not be the same. It would be useful to compare the same version, and also be helpful if you could test with the most recent X server (1.16.0) FWIW, the .svgs attached to that bug seem to render identically (although I'm not sure what correctly looks like) using a Cygwin Inkscape 0.48.4 r9939 (from cygwinports) and X server 1.16.0-1 > It also does not happen if > I run a native Windows version (not cygwin, not X11) of Inkscape on the > same PC which hosts that X11 server on the same test files. The glitch > does not occur with a huge number of other test files I have looked at > over the years. It seems there is something specific to the clipping > code in Inkscape and this particular X11 transport path/server > combination. Moreover, it looks like the problem is only manifested (or > only manifested frequently) when the clipping path consists of two (or > more?) disjoint sections. > > When the glitches occur nothing is added to XWin.0.log. > > Also this X11 server is not running in the full cygwin environment, but > rather in one edited down to just the minimum needed to run the X11 > server. I distribute this version here: > > http://sourceforge.net/projects/minimalcygwinx/ > > I don't think this is a factor though, since all of the action is going > on inside the X11 server process(es). -- 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/