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Re: Diamond Video card problems?

• To: mathgroup@smc.vnet.net
• Subject: [mg10658] Re: [mg10600] Diamond Video card problems?
• From: John Albert Horst <john.horst@nist.gov>
• Date: Fri, 30 Jan 1998 04:23:59 -0500

Greg,

I have the same problem with Mathematica 3.0.1 on my Windows 95 system. 
I also found that Wolfram support couldn't help.  Curiously, I have a
Matrox Mystique video card, so it looks like it is not a problem with
your particular card.  When I discovered the problem on my Cyrix-based
system, I returned it to the vendor (Cybermax Computers) to get a
Pentium, since Wolfram says they officially support only Pentium-based
systems.  The problem did not go away or abate with this change.  My
way of "fixing" the problem is to close the file and immediately reopen
it.  This is a good workaround for me since the problem only crops up
less than once a day on average and then, only with relatively large
notebooks.  It also seems that the choice of screen resolution has
something to do with it, i.e., I had more success with 32-bit color
than with 24 or 16.  By the way, I have no problems with my Windows NT
system with a Matrox Millenium card.  I think it is a problem with the
Windows 95 system and certain video cards and sync rates, but I haven't
time or resources to prove it.

John Horst
NIST
Gaithersburg, MD

At 04:42 AM 1/26/98 -0500, you wrote:
>Hello again!
>
>I just wanted to ask for further suggestions about that problem I posted
>a while back.  Since my description of the problem wasn't very clear,
>I've posted a screen shot of the aftermath on the web.  If you go to 
>http://www.wam.umd.edu/~dwarf/computer.htm there are links to both the
>screen shot and a sample notebook I can use to duplicate the problem,
>along with what I do to reproduce it.
>
>I called Wolfram tech support, but they couldn't reproduce it.  I can
>reproduce it an any computer I've tried it on, and the common link is a
>Diamond Multimedia video card.  Not necessarily the same card either.
>
>Today I downloaded the newest drivers I could find with no success. I
>have to say, if this means I have to go buy a new video card to use
>Mathematica  I'll be *quite* unamused.
>
>If anyone has any suggestions, I'm *dying* to hear them.
>
>Thanks!
>
>Greg Anderson
>dwarf@wam.umd.edu
>
>
>
John Albert Horst
Intelligent Systems Division
National Institute of Standards and Technology
Bldg 220 Rm B-124
Gaithersburg, MD  20899
voice: (301)975-3430
email: john.horst@nist.gov
internet: http://isd.cme.nist.gov/staff/horst/