Newsgroups: comp.sys.ibm.pc.hardware
Subject: 486-33 and flickering monitor
Date: 25 Sep 92  09:23:58 mst

Hello Mark!

19 Sep 92 03:10, Mark Cosham wrote to All:

 MC> From: int704v@aurora.cc.monash.edu.au (Mark Cosham)
 MC> haven.umd.edu!darwin.sura.net!spool.mu.edu!uunet!munnari.oz.au!bruce.cs.mo
 MC> n ash.edu.au!monu6!aurora.cc.monash.edu.au!int704v
 MC> Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: 486-33 and
 MC> flickering monitor Organization: Monash University, Melb.,
 MC> Australia. @Message-ID:
 MC> <int704v.716872228@aurora.cc.monash.edu.au> @References:
 MC> <int704v.716818456@aurora.cc.monash.edu.au> <9q3ns2#.kehcheng@netcom.com>
 MC> Date: Sat, 19 Sep 1992 03:10:28 GMT kehcheng@netcom.com (Keh-Cheng Chu)
 MC> writes:
 >> Mark Cosham (int704v@aurora.cc.monash.edu.au) wrote:
 >> : gion@chopin.udel.edu (Timothy C. Gion) writes:
 >> :
 >>: > I recently upgraded my motherboard from a 386-20 to a 486-33 by
 >>: > American Digicom... after installing the board, I noticed my monitor
 >>: > really flickered noticibly... at first I thought it was my ancient VGA
 >>: > card, but I replaced it with a Boca SVGA card... still no luck... does
 >>: > any know if this is a coincidence or could the motherboard be causing
 >>: > problems with the monitor some how?
 >> :
 >> : More likely it is the quality of the screen.  What modes are you running
 >> in? : : Mark : -- : All I ask of life is a constant and exaggerated sense
 >> of my own importance. :
 >> -+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+---
 >> - :  Mark Cosham   Monash University, Melbourne, Victoria, Australia
 MC>
 >> Tim says he upgraded the motherboard and then the monitor began to
 >> flicker. How could the problem be with the monitor?
 MC>
 >> The display on my 386-25 used to be rock solid and flicker free.  After I
 >> upgraded the memory from 4M to 8M, things began to change.  I don't know
 >> if this is what Tim's talking about, but I know it's not the same flicker
 >> you see in interlaced monitors.  Now every time I have a light-colored
 >> background, I can see dark horizontal lines running up and down the
 >> screen. This occurs in every mode I have tried, even at 640x480 text mode.
 MC>
 >> I have tried different video cards, different slots for the card (the
 >> memory board is in a 32-bit slot which I cannot move), and different
 >> monitor cables, but the problem remains.  For over two years I have
 >> reluctantly lived with it because 8M memory is too important to me to give
 >> up.
 MC>
 MC> Hi!
 MC>   I'm not sure what's going on here, but is your extra memory a
 MC> different speed?
 MC>
 MC> Mark
 MC> --
 MC> All I ask of life is a constant and exaggerated sense of my own
 MC> importance. -+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 MC> --+--+--+--+- Mark Cosham   Monash University, Melbourne, Victoria,
 MC> Australia    int704v@aurora.cc.monash.edu.au
 MC> cosham@yoyo.cc.monash.edu.au -+- Fred-Uf 1.8k + Origin: Passed through
 MC> TTLG:  UUCP <> ProgNet gateway (42:1000/2.0)

You may try installing the same or faster memory onto the vga card. It is normal for slow or different video memory to do funny things.

David

 * Origin: Dave's Place - Edmonton Alberta (42:100/37)
From: chuckc@hpfcso.FC.HP.COM (Chuck Cairns)
Date: Mon, 5 Oct 1992 23:53:21 GMT
Subject: Re: Re: Please recommend SCSI controllers
Organization: Hewlett-Packard, Fort Collins, CO, USA