Jiggly text on AIW 8500 (and AIW 7500)

[Frank Burleigh]

I have a Redeon AIW 8500 card on an Asus A7V board with AMD Athlon 850.
The monitor is a NEC Multisync FP1370. The connector is DVI
(certainly it isn't VGA ;-) using an adaptor on the monitor's cable. My
video is set to 1920x1440 x 16bpp at 75hz. This setting is well within
both the card's and monitor's capabilities.

My problem is that text "jiggles"--I can see the dots moving, seemingly
left to right. This is not the flicker you'd see if your card were set
to one of the lower refresh rates.

I've had this problem for a couple years, and have done a few things to
try to improve it.
- replaced the original Redeon AIW 7500 card with an 8500.
- had the monitor replaced *twice* including with a Mitsubishi Diamond
something or other at a similar calibre to the current Multisync. I
spent a great deal of time with NEC's tech support, nothing we did had
much positive effect.
- tried different video cards (Matrox and one of the cheaper nVidia
powered cards) with the monitor and cable. This made the text perfect.
- lower refresh rates and *much* lower resolutions do seem to solidify
the image quality but not totally. The image quality was very stable at
my video settings using the non-ATI cards.
- wrote ATI--useless. They'd reply with canned answers but never got
anything back to my detailed replies except "return the card." You
could tell no human being was absorbing the logic that multiple cards
and monitors had already been tried.

Because I don't believe I've had two bum ATI cards, and taking
everything else into account, I suspect the monitor cable or DVI adaptor
have problems carrying the information they're being asked to carry.
But this isn't something I know a lot about, so I'm hoping someone here
could provide some guidance.

Thanks in advance.

 

[Ben Pope]

I have a Redeon AIW 8500 card on an Asus A7V board with AMD Athlon 850.
The monitor is a NEC Multisync FP1370. The connector is DVI
(certainly it isn't VGA ;-) using an adaptor on the monitor's cable. My
video is set to 1920x1440 x 16bpp at 75hz. This setting is well within
both the card's and monitor's capabilities.

My problem is that text "jiggles"--I can see the dots moving, seemingly
left to right. This is not the flicker you'd see if your card were set
to one of the lower refresh rates.

Any power adaptors in the vicinity of the monitor? The magnetic fields
produced by the changing flux in the transformers can have exactly that
effect. In fact, anything with a coil in it, such as speakers can do this.
I've also seen DECT phone base units and anything else with an RF
transmitter do it.

Move the monitor to the middle of your room (or as far as it can reach from
the walls) and see if the problem is still there.

Ben