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Newsgroups: comp.unix.bsd Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!ukma!usenet.ins.cwru.edu!icd.ab.com!tinman.mke.ab.com!tdphette From: tdphette@mke.ab.com (Thad Phetteplace x4461) Subject: Re: [386bsd] Help: Xconfig mode for Trident 9000 (512k) ? Message-ID: <1992Nov2.214813.29645@tinman.mke.ab.com> Sender: usenet@tinman.mke.ab.com (NetNews server account) Nntp-Posting-Host: toejam Organization: Allen-Bradley Co. X-Newsreader: Tin 1.1 PL4 References: <1992Oct30.133348.5069@ufhx1.ufh.ac.za> Date: Mon, 2 Nov 1992 21:48:13 GMT Lines: 36 cssjs2@ufhx1.ufh.ac.za (Mr I Scheepers) writes: : Why does my display look "folded"? Moving the cursor around makes it move off : the right side and on to the left side of the display. There's a white block : on the left side of the screen, while the rest looks stippled. Does anyone : have an entry that works for 640x480 (or even 800x600)? The 800x600 mode : is quite unusable. (I have a 31.5 kHz monitor, could that be it?) : 31.5 kHz is a very common horizontal timing value for 640x480 VGA mode so I doubt your monitor will be a problem. The *folded screen* is probabley caused by incorrect values in the horizontal timing fields of you Xconfig. The correct entries will depend both on the type of video card and monitor that you are using. The modeDB.txt file can give you a starting point for values to try, you'll find it in the lib/X11/etc subdirectory of your X11 distribution. If the default stuff doesn't work you can try reading the XConfig.Notes file and build your numbers from scratch. You will need some technical specs on your monitor and VGA board however. The trick is to find out what vertical and horizontal frequencies your VGA board supports for the desired mode. Next find out what frequencies your monitor supports for that mode and find a frequency pair that coincides with the values for your monitor. The vertical frequency is what you will use for the clock. The horizontal frequency can be used to compute some of the numbers in horizontal timing column of your Xconfig. A little trial and error tweeking the numbers and you should be all set :-) -- Thad Phetteplace Network Systems Analyst, Allen-Bradley Co. Phone: (414)382-4461 Email: tdphette@mke.ab.com The opinions expressed here are entirely my own and not that of my employer. I am not a slob, I am simply doing an experiment in domestic entropy!