From owner-freebsd-newbies Sun Dec 22 17: 9:57 2002 Delivered-To: freebsd-newbies@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 61B1737B401 for ; Sun, 22 Dec 2002 17:09:55 -0800 (PST) Received: from blueyonder.co.uk (pcow058o.blueyonder.co.uk [195.188.53.98]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4290143EE5 for ; Sun, 22 Dec 2002 17:09:54 -0800 (PST) (envelope-from jfm@blueyonder.co.uk) Received: from lexx ([62.31.198.203]) by blueyonder.co.uk with Microsoft SMTPSVC(5.5.1877.757.75); Mon, 23 Dec 2002 01:09:53 +0000 From: John Murphy To: newbies@freebsd.org Subject: Re: Vrefresh clocking Date: Mon, 23 Dec 2002 01:09:52 +0000 Organization: poor Reply-To: jfm@blueyonder.co.uk Message-ID: References: In-Reply-To: X-Mailer: Forte Agent 1.9/32.560 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Sender: owner-freebsd-newbies@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org "clayton rollins" wrote: >After plugging in a good multi-sync monitor and adjusting my XF86Config,= I=20 >re-ran startx, and checked the logs again. To my surprise, three good = modes=20 >were found with 75-76kHz vrefresh. (using the s3 trio driver) It's the little 'k' in there I was worried about. Vertical refresh rate = is Hz (ie. fps whole pictures/second) not kHz. >I decided this was an acceptable thing after finding many different=20 >companies recommending their users set the vrefresh as low as=20 >73-point-something for this monitor. I also believe that win 98 uses = greater=20 >ranges than this due to the amount of distortion/flickering I would get = in=20 >some of their modes (maybe just subjective opinion, though). win2k insists my Compaq V70 only does 1024x768 @ 60Hz but it's been = working nicely at 85Hz. I doubt if you'd notice any flicker at 76Hz unless your ambient lighting was refreshing at an unfortunate harmonic :) >I'm also going to continue to tinker with a custom modeline to try to = get=20 >the vrefresh exactly right. (If anyone knows a link or man page which = breaks=20 >down the math behind this, feel free to shout it out.) You shouldn't need to but Greg Lehey's explanation in The Complete = FreeBSD is worth reading if you have access to it. Googling 'Xfree86 modelines' leads to (hopefully) useful resources. --=20 John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message