[AG-TECH] Display Performance Problems

[John Shalf]

Similar thing for me.
The taskbar disappeared because Win2k decided to enable a
screen that wasn't connected to a monitor (and moved the
taskbar there to boot...).  It was confusing at first, but
eventually found the right screen by replugging monitors
(ugh).

Has anyone gotten better performance from the G200 by
shuffling cards around to get different IRQ's?  I understand
the PCI slot next to the AGP must by necessity share an IRQ
with it.  I wonder if that would help rather than hurt
performance???

-john

Mike Daw wrote:
> 
> Hmm. Sounds interesting. I'll give what you suggest a go. I didn't
> physically move any cards - I just put the primary display on one of the
> G200 outputs. The desktop icons went to the right place but the taskbar went
> missing.
> 
> I guess there is a bug somewhere between the Matrox drivers and Win2K.
> 
> > -----Original Message-----
> > From: Matthew Wolf [mailto:mwolf at cc.gatech.edu]
> > Sent: 09 October 2001 16:48
> > To: Mike Daw
> > Cc: AG Technical Developers (E-mail); Yien Kwok (E-mail)
> > Subject: Re: [AG-TECH] Display Performance Problems
> >
> >
> > I saw a similar problem when I was juggling around cards in my display
> > machine.  I managed to get it back to the right place by disabling all
> > of the outputs except for screen 1 (the first output on the AGP G450)
> > and rebooting.  The taskbar reappeared on that screen, and
> > then I could
> > go back and add the other outputs back into the mix.  I don't know if
> > this is what you mean by switching displays around; if so, I think
> > that's a big cry for help from our Microsoft friends!
> >
> > Good luck!!!
> >
> > Matt
> >
> > Mike Daw wrote:
> > >
> > > Just for everyone's information:
> > >
> > > We were having performance problems on our display machine.
> > >
> > > I tried John Shalf's suggestion of moving from 32-bit
> > colour to 16-bit. This
> > > had a small effect on performance.
> > >
> > > I tried Marty Hoag's suggestion of putting my 2 displays
> > that handle most of
> > > the vic onto the G450 card rather than the G200 and this
> > had a very good
> > > effect on performance.
> > >
> > > So thank-you. I guess we should change the G200 for a
> > G450PCI as soon as we
> > > can.
> > >
> > > HOWEVER - something rather strange happened while I was
> > switching displays
> > > around. I was logged in as administrator and I completely
> > lost my taskbar!
> > > This meant quite a loss in the things I could do, as you
> > can imagine.
> > > Luckily, other users still had their taskbar and I was able
> > to create a new
> > > administrator user that had a taskbar. Has anyone else
> > experienced such a
> > > worrying thing when playing around with displays and if so,
> > what did they do
> > > about it? (And no, switching displays back again and
> > re-booting made no
> > > difference.)
> > >
> > > Mike.
> > >
> > > -------------------------------------------------
> > > Mike Daw
> > > Computer Services for Academic Research (CSAR)
> > > Manchester Computing, Kilburn Building, University of Manchester,
> > > Manchester M13 9PL, UK
> > > Tel: +44 (0)161 275 7026 Fax: +44 (0)161 275 6800
> > > Email: mike.daw at man.ac.uk
> > > http://www.mcc.ac.uk
> > > -------------------------------------------------
> >
> > --
> >
> >         -- Matthew Wolf
> >         -- Research Scientist, IHPC Laboratory
> >         -- College of Computing, Georgia Tech
> >         -- mwolf at cc.gatech.edu