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From: terry@cs.weber.edu (A Wizard of Earth C)
Subject: Re: Anyone running XFree-1.1 on Prodesigner IIs w/ NEC 3FGx?
Message-ID: <1993Jan14.211418.13307@fcom.cc.utah.edu>
Sender: news@fcom.cc.utah.edu
Organization: Weber State University (Ogden, UT)
References: <BOB.93Jan14085857@benton.prepress.com>
Date: Thu, 14 Jan 93 21:14:18 GMT
Lines: 84
In article <BOB.93Jan14085857@benton.prepress.com> bob@prepress.com (Robert Crowe) writes:
>
>Hello,
>
>I have just bought a 486 system for running 386BSD and X, etc...
>My hardware setup is: 486-50, 16 Meg ram, adaptec-1542B, maxtor scsi
>disk, Orchid Prodesigner IIs w/ 1MB, and an NEC 3FGx monitor.
>
>According to the manufactures, the video card and monitor should both
>be capable of displaying 1024x768 at 60Hz. I can't seem to get them to
>do that. When ever I use one of the 1024x768 modes, the screen goes to
>pot. There is a small patch in the center that looks vaguely like it
>should be an xterm, but just a little. No matter how I tweak the
>monitor numbers, I can't seem to get this to work. I have tried
>modegen, and the vesa standard numbers ( which both the monitor and
>the video card supposably support ) to no avail.
>
>Since I just bought this setup, I can still exchange the monitor for
>another model ( if I do it soon ), But before I do that I was hoping
>to find out the following:
>
> 1. Has anyone got a good Xconfig setup for the Prodesigner
> IIs/Nec 3FGx?
>
> 2. If it appears that the 3FGx is not up to the task of
> 1024x768, would it be wise to upgrade to the 4FG ( the
> 5FG is just too much money right now ). And if so, does
> anyone have good Xconfig settings for that.
> Alternatively, is there a better monitor to exchange the
> 3FGx for than the 4FG?
>
> 3. Does the Prodesigner IIs even support 1024x768 @ 72Hz
> ( or 60Hz for that matter )
You don't have anything in the ModeDB of the Xconfig you posted that
looks like:
"1024x768" 65 1024 1104 1264 1352 768 806 813 836
And the "Modes" line looks like:
Modes "880x620" "880x600" "800x600" "984x775"
Instead of:
Modes "880x620" "880x600" "800x600" "984x775" "1024x768"
The more general problem is probably your dot clocks (which you haven't
posted). For instance, we have a Dell machine with a video card that
can produce 70, 76, 78, 82... Hz output; but the monitor has only one
frequency it can sync to in that range: 72 Hz. Thus without a means of
reprogramming the dot clocks from UNIX, there's no way to support
1024x768 (short of 45 Hz interlace -- Dell technical support said it
wasn't possible at all, but they were wrong).
Make sure you pick a frequency for the 1024x768 that is supported by
*both* your video cards *and* your monitor.
The fact is that the Dell card in question can have it's dot clock
reprogrammed via BIOS calls (INT 10 extended modes), and so can be
set to a higher frequency supported by the monitor. Thus MS Windows
works fine on the same hardware.
Get your dot clocks by redirecting the XServer's output to a file and
looking at what's in the file after you exit X. Then buy a monitor which
supports some frequency (preferrably 70 Hz or higher) that the card is
capable of putting out.
Alternatively, switch out the card and keep the monitor. Either way,
they have to agree on each frequency you want to use.
Terry Lambert
terry@icarus.weber.edu
terry_lambert@novell.com
---
Any opinions in this posting are my own and not those of my present
or previous employers.
--
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