From mboxrd@z Thu Jan 1 00:00:00 1970 From: Petr Vandrovec Subject: Re: Matrox (g450) DVI problems in 2.6.17 Date: Mon, 25 Sep 2006 20:08:01 +0200 Message-ID: <45181B01.2080203@vc.cvut.cz> References: Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1GRusI-0001g3-5p for linux-fbdev-devel@lists.sourceforge.net; Mon, 25 Sep 2006 11:08:14 -0700 Received: from mailgw.cvut.cz ([147.32.3.235]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1GRusG-0005HG-ME for linux-fbdev-devel@lists.sourceforge.net; Mon, 25 Sep 2006 11:08:14 -0700 In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Michal Suchanek Cc: linux-fbdev-devel@lists.sourceforge.net Michal Suchanek wrote: > Hello from the Matrox DVI land > > For me matrox DVI framebuffer (sort of) works on Linux 2.6.16.19 and > fails on 2.6.17.13. > > The DVI support on Matroxes is quite flaky I'd guess. Ask Matrox to release documentation for their hardware... > I got a matrox g450 > > 01:00.0 VGA compatible controller: Matrox Graphics, Inc. G400/G450 (rev 85) > > and I connect it with DVI to a flat panel. > For X to work I have to use kernel framebuffer to set the videomode > (UseFBDev in X). Otherwise X fails to set the timings correctly > (nothing is visible). > With kernel framebuffer I get an usable videomode in two steps. First > I start the X server, and there is only a message from the monitor > about bad timings. However, after switching to the console and back X > works well. Sometimes the switch is not needed (usually if started > from an already running X server). Works with software suspend as well > (as long as dri is not used). Are not you using ACER's monitor? Try just powering monitor off and back on instead of doing mode switch. > With 2.6.17.13 the picture I get is noisy. The lines shift a few > pixels horizontally in various directions. It is much like the results > I got with g550 when there was no screen connected to DVI at startup. > only much more noise (there must be a screen connected to DVI at boot > for the framebuffer to work correctly with DVI - at least it had to > last time I tried). Upgrade to 2.6.18, it should behave like 2.6.16 does. Petr ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV