From owner-freebsd-questions@FreeBSD.ORG Wed Mar 9 10:58:59 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9DEE116A4CE for ; Wed, 9 Mar 2005 10:58:59 +0000 (GMT) Received: from mail.vslash.com (gambetta-2-82-67-185-6.fbx.proxad.net [82.67.185.6]) by mx1.FreeBSD.org (Postfix) with ESMTP id ACEE643D1F for ; Wed, 9 Mar 2005 10:58:58 +0000 (GMT) (envelope-from valery@vslash.com) Received: from [192.168.0.2] (hal.intranet.vslash.com [192.168.0.2]) by mail.vslash.com (Postfix) with ESMTP id 53B857E81A for ; Wed, 9 Mar 2005 11:59:57 +0100 (CET) Message-ID: <422ED72C.9000109@vslash.com> Date: Wed, 09 Mar 2005 11:59:56 +0100 From: Valery User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20050224 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Subject: Xorg-6.8.1 / ATI & DDC function X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Mar 2005 10:58:59 -0000 Hi, i would upgrade Xorg-6.7.0 to 6.8.1 in order to try to correct a seemingly malfunction with ATI video card and the set {ati,radeon_drv,drm} modules. The trouble we encounter is a bad setting of the DCF (Dot Clock Freq.) of the ATI Card at X startup. The result is a very high Moiré-Effect with LCD monitors, making them unusable at their optimal resolution. We target the drivers because we don't have any problem with other OS (MS ..) Of course, changing cables and so one has no effect. We have tried to setup our proper modeline, at different frequencies but the driver seem to do what it want : modeline values don't give expected monitor frequencies. For example, this modeline : "1280x1024" 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +/+ should give you a HSF (Hor. Freq.) at 63.9KHz, but the monitor report a HSF=64.7Khz ; we don't know how the driver and the video produce this difference. Generally, you got a little difference arround 0.1~0.2KHz, but not 0.7, it's a big one. Other OS have a good behaviour (monitor report the good frequency, and there's no Moiré Effect with of course same resolution). We have upgraded radeon_drv from 4.0.1 to 4.4 with no effect. We have emailed to Gatos (ati,radeon_drv), and they advice to update Xorg to 6.8.2. We have emailed to some "Video veteran", and they don't understand. The set {Xorg6.7, ati6.5.6, radeon4.0.1} had a problem with DDC (no DDC detection), and we hope our solution is here, Xorg6.8.1+videoDrivers seem to correct that (release notes). Well, this problem concern 6 computers, and we need a solution, no matter to change monitors neither computer. Has anybody some advice or some information about that ? Ho, we use FBSD-5.3 Many thanks, v/