Date: Mon, 26 Jan 2009 10:04:33 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: Robert Noland <rnoland@freebsd.org> Cc: freebsd-x11@freebsd.org Subject: Re: Xorg 7.4 breaks mga with G450 Message-ID: <alpine.BSF.2.00.0901260943380.1030@wonkity.com> In-Reply-To: <1232939280.1973.7.camel@wombat.2hip.net> References: <%2B$PUWxC8yOfJFwC1@lap.knigma.org> <1232939280.1973.7.camel@wombat.2hip.net>
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On Sun, 25 Jan 2009, Robert Noland wrote: > On Sun, 2009-01-25 at 22:50 +0000, Mark Knight wrote: >> Hi, >> >> I've been using the same PC with a Matrox G450 on AGP with a trusty old >> iiyama CRT monitor (Vision Master pro 410) for years. System is running >> FreeBSD 6.4-RELEASE-p1 >> >> Having just upgraded to Xorg 7.4 from 7.3 and following the instructions >> in UPDATING I cannot get a stable picture. >> >> Using my stock xorg.conf (see below), or a brand new config version >> created by "Xorg -configure" I get an extremely noisy (but stable) image >> if I lower resultion from my normal 1280x1024 to 1027x768. At the >> standard resolution the monitor is unable to sync. >> >> http://www.knigma.org.uk/scratch/Xorg.0.log >> http://www.knigma.org.uk/scratch/xorg.conf >> >> I've tried with and without DDC and with and without >> HorizSync/VertRefresh and with and without SyncOnGreen (my monitor has >> always product a slightly sharper picture with the latter). >> >> Any ideas? > > I think your on the right track... It sounds like the mode calculation > is off... I won't have access to mga hardware before next weekend, but > even then mine is connected to a panel. My G450 does the same (sync problem/noisy picture) on an LCD. mga-1.4.9 does it too, so I'd suspect a change in xorg-server. Resolutions other than 1024x768 come up as 1024x768 anyway. That could be the monitor trying to be smart. Sample log and xorg.conf at: http://www.wonkity.com/~wblock/mga -Warren Block * Rapid City, South Dakota USA
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