Full Hardware acceleration on GF6800 = jumpy mouse cursor

[SGX]

Since getting this 6800, I've had the problem of the mouse cursor not being smooth, or rather you'll see it "blip" in front of and behind itself when moving across the screen. This only happens when Hardware acceleration is fully enabled. Taking it down one notch seems to fix this, however it causes the cursor to flicker in 3d games that use hardware cursor acceleration.

Since removing my 9700 Pro, I've cleaned out all the old drivers, reinstalled even my chipset drivers, etc. I've tried all the way down to 78.xx Forceware's as well. Enabling/disabling fast writes and AGP 8x have had no effect either.

However, 3d performance is just fine.

My System:

Abit NF7-S 2.0 & XP3200+
1gb Corsair XMS3200
Leadtek Geforce 6800 128mb AGP
Forceware 81.95

 

[SolMiester]

What type is your mouse, does it have its own drivers, sounds like conflict to me. Also, what is the size of your agp aperture in BIOS?

 

[SGX]

It's just a microsoft intellimouse explorer. (the white one with grey buttons on the side) It doesn't have any drivers. I believe my AGP aperture is 256.

 

[mountcarlmore]

aperture size for a larger card should be 64mb, as it can store most of the textures in the vc memory. its a myth that larger agp memory helps.

 

[SGX]

It wasn't any better or worse @ 128mb, and the USB port that the mouse is on isn't on the same IRQ.

I did notice some stuttering in the dxdiag bouncing box test the first run through.

 

[FlyingPenguin]

First of all, put the AGP Aperature back on default (64Mb) for now until you finish troubleshooting this. Many mobo/vid card combinations will have all kinds of issues with non-standard AGP aperature settings.

Is the mouse on a USB port? If so try it on a PS/2 port (you probably have an adapter lying around). Be curious to see if that helps.

I am willing to suspect that the video card is hogging the AGP bus (possibly due to the aperature setting?). If so, it's not just affecting the mouse. It may not even be affecting the mouse directly but it may be causing Windows to stutter while the bus is flooded.

Do you have a quality PSU on this rig? Could be the PSU is having a problem holding stable voltage on one of the rails with the extra current draw of the 6800. Might be worth swapping out the PSU (never hurts to have a spare PSU on the shelf anyway).

Do you have any tweaking software installed for the old 9700? Could be causing problems.

Are you using the PCI Latency Tool to modify the default PCI latency for the video card? If so, could be the new card doesn't like it. Set it back to the default.

Hope this helps...

 

[SGX]

Set AGP aperture to 64mb. no effect.

Just found and tried the PS2 adapter, and it actually seems worse. It does it even without full hardware acceleration enabled.

PSU is a Thermaltake 420W. MBM reads all voltages as being good.

I never did any tweaking on my 9700, so no.

I never had a PCI Latency tool installed beforehand either. I tried using one after I got this card to see if that was the problem, but it didn't help.