G940 rudder pedal spiking

[oboe]

Well Logitech sent me a replacement G940, and the rudder pedal axis on the replacement unit has the exact same problem as the original unit.

The rudder axis does not hold a steady partial input (in either direction) without spiking.   I can see the axis values jump around in the AH's controller calibration screen.   Holding 1/2 input in either direction causes the axis values to spike 2000-4000 from the input value constantly.   It does hold steady with zero deflection or full deflection in either direction; just not partial input.

If I go to external view, I can see the aircraft's rudder jumping back and forth constantly as I hold steady, partial input on the rudder pedals.

Downloaded and installed the latest driver software (v5.08) and this has no effect on the problem.

Is there anyway this could be related to my hardware?   My Thrustmaster rudder pedals don't spike, but they are not USB.   I have tried a powered USB port and that makes no difference either.

My build has a Gigabyte EP45 mobo and 64-bit Win 7 Professional - could the problem be related to some arcane USB option in BIOS?   If I hook the 940 up to my VISTA-equipped laptop (non-gaming); I don't get the rudder axis spiking.   Or could it be an driver issue?

[Ack-Ack]

Maybe a Windows 7 issue?  By any chance, is there another system with Windows 7 you can try the pedals on?


ack-ack

[oboe]

Nope, no other Win 7 computers available to me.

I did go to Gigabyte's site and made sure I had the latest mobo drivers as well.

Just not sure what to do at this point.

[Ack-Ack]

I just wonder if it's a W7 issue.  Looking at their forums, it seems that quite a few that are having troubles are using 64bit W7.


ack-ack

[FLS]

Oboe have you tried moving the rudder pedals constantly through full deflection for a minute to see if that would help?

[oboe]

Oboe have you tried moving the rudder pedals constantly through full deflection for a minute to see if that would help?

I've tried all sorts of things, but how do you think that would help, FLS?   I move the rudder pedals multiple times through their full range when calibrating, and the calibration screen doesn't show spiking then.   Do you have a theory about what might be wrong?   

Anybody else with a G940 running Win7 64bit?   

[FLS]

The pot has a contact that could be dirty. Sometimes working the pot can clean it up a little.

[oneway]

Try uninstalling the logitech software that comes with the pedals and let W7 figure out the driver...

In other words get rid of the logitech drivers and front end all together...fire up W7, plug in the usb connector while the system is running and see if W7 can sort it out...

I just rolled into W7 and found that many of the attempts of the peripheral guys to patch up old 32 bit drivers to work with 64 bit os are flawed..don't work...

In that vein you can try also rolling back to an old set of drivers...that are missing the patches designed for W7x64...and just let W7 compartmentalize the driver as xp-32...

Worth a shot...

Oneway

Oh...one last thing...if you are running a new board that has USB 3.0...try to find a USB port that is NOT 3.0...how old are your pedals?..are they USB 1.0 or 2.0?...some BIOS allow setting USB ports to 1.0...if your pedals are old 1.0 units, you might try to set up one of the USB buses to run at 1.0...

[oboe]

it seems odd that both the original and replacement would have dirty rudder pots, but I can make sure I try that suggestion.

My rudder pedals aren't USB in the separate sense - they plug into the joystick (as does the throttle) and the joystick plugs into a USB port.   My board is a Gigabyte EP45-UD3P and has only USB 2.0, not 3.0.

I will try uninstalling the drivers and letting windows 7 attempt to use its own drivers.   I'll also check the website and see if I can find a 32bit XP or Vista version of the drivers.

Thx help and suggestions

[oboe]

Windows doesn't identify the axes correctly by itself, and neither does the 32-bit driver for Vista.

I've also learned one of the toe brakes is defective - behaves like a digital rather than analog input.   Logitech tech support suggested I try installing the replacement G940 on a second computer, which I did - my Vista-equipped laptop.   Spiking on the replacement unit is worse than it was on the original unit.

Constant movement of the rudder pedals through full deflection didn't help either.

I've asked for a refund from Logitech.

[FLS]

Sorry to hear you can't get it working oboe. I've used it with 64 bit Win7 with and without the profiler software without problems. I've noticed a little rudder spiking a couple of times now and both times got rid of it by working the potentiometer for half a minute. I've also developed some R1 spiking in the throttle but just when the throttle is moved. Working the throttle back and forth minimizes it but it comes back. Logitech is working on version 5.09 of the profiler software as a stopgap to a total rewrite of the driver. Developers already have an early release. Since you don't see the spiking on your notebook maybe it's a driver problem and not hardware. The G940 isn't perfect but I still haven't plugged my Cougar back in. I hope you get your problem resolved one way or the other.

[oboe]

Thanks FLS - its such a great design with great features, I was really excited about it.   The replacement unit rudder axis DOES spike horribly on my notebook (though the original unit didn't).    I would have definitely paid extra $$ for Hall sensors on every axis, which is what I was lead to believe I was getting by the ads anyway - my bad for not realizing that).

I doubt they will refund my money, but I do need to send the replacement back for a 3rd unit.   Perhaps the new stopgap drivers will be ready by the time I get the 2nd replacement back...

Hey, when you calibrate yours with their software, does pressing the buttons on the joystick send the force feedback into a tizzy?   There is this calibration confirmation screen where you check all the axes on each unit out, and when I press the joystick buttons, the force feedback goes absolutely bonkers, whipping the stick out of my hand its so violent.   Does yours do that?

[FLS]

The forcefeedback demo when pressing various buttons is standard for Logitech, Their FFB wheels do it too.

If you have a set of USB pedals you could unplug the Logitech pedals and use those for now with the Logitech stick and throttle. AH allows you to mix whatever controllers you can plug in.

[oboe]

Ah, thanks.

Still using my TM Elite rudder pedals I bought back in '98.   I converted those to a Hall effect sensor a while ago with one of Cubby's upgrades.   They're not USB though, and when I tried the game-to-USB converter I used to use with them before the Hall conversion, it didn't work properly.   Not sure if the Hall conversion would cause that problem, I would've thought not.

No worries, still hanging in there with the Cougar.   

[FLS]

Well if you have room you could plug in both sticks, run the pedals through the cougar and use them and have two throttles and FFB.