Date: Mon, 23 Dec 2002 01:09:52 +0000 From: John Murphy <jfm@blueyonder.co.uk> To: newbies@freebsd.org Subject: Re: Vrefresh clocking Message-ID: <tbnc0vst4l0ealog27ef5cfellmtipeqjj@4ax.com> In-Reply-To: <F3MvIggcpPxgweE4YLE000094d3@hotmail.com> References: <F3MvIggcpPxgweE4YLE000094d3@hotmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
"clayton rollins" <crollins666@hotmail.com> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?tbnc0vst4l0ealog27ef5cfellmtipeqjj>