Dual Monitor Flashing Background
 

NVIDIA GeForce 7600GT Windows XP sp3
Blue background has a strange pattern of (mainly black but also coloured) flashing pixels on right hand monitor which disappear as fish swim through or coral or rock scroll past. If I go into settings and tick same image on both monitors the flahing pixels occur on the left hand monitor. Unable to post image as it looks fine using Prt Sc.

Hmm, thought we had this problem licked!

No, we're still looking into that one. It could be a driver problem.

For info I am running latest NVIDIA drivers. For further info (sorry if it's overkill)...

Processor: Intel(R) Pentium(R) D CPU 3.20GHz (3200 MHz)
Operating System: Microsoft Windows XP, 32-bit (Service Pack 3)
DirectX version: 9.0c
GPU processor: GeForce 7600 GT
Driver version: 178.13
Core clock: 562 MHz
Shader clock: 562 MHz
Memory clock: 702 MHz (1404 MHz data rate)
Memory interface: 128-bit
Memory: 256 MB
Video BIOS version: 5.73.22.15.52
IRQ: 16
Bus: PCI Express x16

A work around for that bug at this time is to set the second monitor at 16bit color. Leave the main monitor at 32 bit.
You can set this in the screensaver settings.

Yep, I can confirm that this does indeed get around the bug.

I think that is a driver bug for that card but it is hard to prove. Other cards from NVidia works fine.

LordBlatherskite, I found this one in the alpha, it effects at least the 7600GT and 7800GT... The other option is to turn on any level of AA, that fixes it even in 32bit color mode...

Thanks for that info drfish. I can confirm that turning on AA (rather than the setting - allow the application to decide) does cure the problem in 32bit colour mode.

I can now report that GF 7900GS also displays this fault on the right-hand monitor. Applying AA had no effect on this occasion, but changing the secondary monitor to 16 bit in the screensaver settings, did remove the effect.

For the record, I had to use ForceWare version 178.24 drivers with this card on my system, - even though the nVidia site suggested that 94.24 was the correct driver for W2K.

AMD Athlon XP2500+,~1.8GHz / 1535MB / GF 7900GS (Driver ForceWare version 178.24) / Dx 9.0c / Win2k SP4 / Dual VP920 ViewSonic Monitors.

I'm still looking into this one. It's the one driver-related problem that I can actually duplicate here.

similar problem
 

Had a similar problem with a Quadro FX 3500 card. Solution that I found was to make the dual monitors span. instead of extended.

In trouble shooting this, I also downloaded the latest driver and still had the same problem.

Please see prior posts by me in the "MA3-READ THIS FIRST!" forum.
A picture is attached. I tried the 16 bit on the right hand monitor trick, and it shows no artifacts. I did not try Horizontal Span. I think it does not work well with SolidWorks....
I'd love to see this fixed!

Dell PWS370, 4GHz, 2GB RAM, NVIDIA Quadro FX 1400, 128MB, Video BIOS 5.41.02.43.09 (latest), DirectX 9.0C

Yes, that's the old bug. I thought it was fixed, but apparently not.

MA3Beta looks good on ATI FireGL V7200 on a dual monitor setup.

Works awesome on the Nivida geforce FX 5500, I know, so old no one ever heard of one. I also run it on the Matrox Parhelia triple and is great on three large screen at 3840x768.