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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!inquo!news.uoregon.edu!psgrain!iafrica.com!aztec.co.za!usenet From: Ian Cooper <ian@oms.co.za> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: X-windows screen wraps around, help.... Date: 14 Feb 1996 07:29:49 GMT Organization: Open Mind Solutions Lines: 21 Message-ID: <4fs31d$15f@aztec.co.za> References: <4fjkkj$k3a@ns1.iamerica.net> <4fjblm$js0@netnews.mis.net> NNTP-Posting-Host: ian.aztec.co.za Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.12 (X11; I; FreeBSD 2.1.0-RELEASE i386) X-URL: news:4fjblm$js0@netnews.mis.net This problem is because the horizontal phase sync pulse is specified incorrectly for your monitor and card. As a result, the card thinks that the monitor's visible area begins some distance from the real edge of your screen. Since you've also told it that the screen is a certain size, of course you get a wraparound effect as the monitor moves the electron gun to the beginnning of the screen upon reaching the right edge. You need to optimize your Monitors section in your XF86Config file, as the defaults are really not all that applicable to some monitors. Read /usr/X11/lib/X11/doc/VideoModes.doc to see what you should do to get this problem to go away. I found a program called "xvidtune" very helpful in getting the right sync pulse width and start (this often takes a bit of trial-and-error to get right). -- Ian Cooper (ian@oms.co.za) Tel: +27 21 23-6065 Open Mind Solutions Fax: +27 21 24-3656 Custom Software Solutions and Internet Firewalls Unit 3, 46 Orange Street http://www.oms.co.za Cape Town