From owner-freebsd-questions@FreeBSD.ORG Wed Jul 13 23:49:06 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CDA48106564A for ; Wed, 13 Jul 2011 23:49:06 +0000 (UTC) (envelope-from perryh@pluto.rain.com) Received: from agora.rdrop.com (unknown [IPv6:2607:f678:1010::34]) by mx1.freebsd.org (Postfix) with ESMTP id ACBF88FC14 for ; Wed, 13 Jul 2011 23:49:06 +0000 (UTC) Received: from agora.rdrop.com (66@localhost [127.0.0.1]) by agora.rdrop.com (8.13.1/8.12.7) with ESMTP id p6DNn5t8065303 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 13 Jul 2011 16:49:06 -0700 (PDT) (envelope-from perryh@pluto.rain.com) Received: (from uucp@localhost) by agora.rdrop.com (8.13.1/8.12.9/Submit) with UUCP id p6DNn5Zb065302; Wed, 13 Jul 2011 16:49:05 -0700 (PDT) Received: from fbsd81 ([192.168.200.81]) by pluto.rain.com (4.1/SMI-4.1-pluto-M2060407) id AA19441; Wed, 13 Jul 11 16:37:22 PDT Date: Wed, 13 Jul 2011 23:37:51 -0700 From: perryh@pluto.rain.com To: trashavenue@gmail.com Message-Id: <4e1e8ebf.62Yd3qvZ4PbEXkLO%perryh@pluto.rain.com> References: <20110713205716.ad2c747f.trashavenue@gmail.com> In-Reply-To: <20110713205716.ad2c747f.trashavenue@gmail.com> User-Agent: nail 11.25 7/29/05 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: DOSBox: whole screen turns black X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Jul 2011 23:49:06 -0000 Philipp wrote: > Hello, > > I've installed DOSBox 0.74 from Ports on FreeBSD 8.2 STABLE. After > starting DOSBox I get some weird graphical errors on the screen: > short horizontal lines appear for less than a second, scattered > on the whole screen. About 5 to 20 seconds later the screen turns > black (dunno whether the monitor turns off) and after 2 seconds my > desktop is back and it starts again. > > My graphics card is an Intel GMA 3000 (Q965) with xf86-video-intel-2.7.1_4. It sure sounds as if the video signal coming out of the graphics card is beyond the monitor's range. That's not supposed to happen with recent xorg, unless the monitor is misreporting its capabilities when the graphics card interrogates it or something (related to DOSBox?) is issuing an xrandr for an unsupported mode. What kind of monitor?