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From: jsims@vuse.vanderbilt.edu (J. Robert Sims)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: problem: ET4000/1024x768/Win3/enhanced 386
Message-ID: <1991Apr29.172626.5510@vuse.vanderbilt.edu>
Date: 29 Apr 91 17:26:26 GMT
References: <hns.672561527@regent.e-technik.tu-muenchen.de>
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In article <hns.672561527@regent.e-technik.tu-muenchen.de> hns@regent.e-technik.tu-muenchen.dbp.de (Henning Spruth) writes:
>I am using the following configuration:
>
>- 25 Mhz 80386 clone
>- ET 4000 super VGA card w/1 MB RAM, called the 'VGA/8514AX2'
>- 120 MB WREN III w/Adaptec 2320 Controller
>- HIMEM.SYS/EMM386.SYS/SMARTDRIVE.SYS
>
>When I set up Windows for 1024x768x16 or 1024x768x256, the monitor
>goes out of sync when I start Windows. If I execute Windows in 
>standard mode ('win -s'), everything is fine. The other resolutions, 
>e.g. 800x600x256, work o.k. in both standard and enhanced 386 mode.
>
>I have tried various windows drivers for the ET4000 (the one supplied
>with the VGA card and two from cica.cica.indiana.edu) and keep
>getting these effects with all of them.
>
>Any help would be greatly appreciated.
>
>-
>Henning Spruth <--> hns@regent.e-technik.tu-muenchen.de

This sounds like one of 3 things:

1) Your monitor can't handle 1024x768 - unlikely, as you can get it to work.

2) Your monitor is interlaced at that resolution, and the card is displaying
      non-interlaced video.  My Tseng 4000 defaults to interlaced, I don't
      know about yours.

3) Vice versa.  Your monitor is non-interlaced at that resolution, and the
      card is displaying interlaced.  This is what happened with my setup.
      I have to run a simple utility (called vmode) to switch the board
      into a non-interlaced mode with the correct scan rates for my
      monitor (there is more than one rate setting available per resolution).
      The utility is non-resident, and quite permanent.  It never gets 
      accidentally reset during use.

Rob
jsims@vuse.vanderbilt.edu