[Controller only works when OpenXenium disconnected]

Nope.  Powering on with power button.  

So upon further testing, I once again removed the modchip and tested with stock controller and it doesn't work now!  However, the 3rd party controller works without modchip.  This stock controller must have just failed.  I bought it second-hand on ebay so who knows.  I have another one on the way that has been tested so maybe that will solve the problem.

Thanks for your help!

[Controller only works when OpenXenium disconnected]

this would be a legitimate xbox controller right?  This is the one I tried. 

https://imgur.com/a/Ot5fVzi

[Controller only works when OpenXenium disconnected]

Can you confirm if it works with a non-genuine controller?  I have both. 

[Controller only works when OpenXenium disconnected]

Well it’s definitely a genuine controller.  I also tried with 3 usb keyboards.  Should that work?

[Controller only works when OpenXenium disconnected]

I did search first before posting and couldn't find any threads specifically talking about this.  I'm sure I'm missing something obvious.  I have tested with an original XBOX S Type controller and a 3rd party controller.  I have also tested with a USB keyboard and an adapter.  None of which work when I enter XeniumOS.  However, the controllers work when modchip is disconnected.

This is a 1.4 revision XBOX.  I assume it must be one of my solder joints to the modchip.  I have already reflowed these joints multiple times to fix another issue.  Unfortunately, I closed the machine up before I realized the problem.  Anyone know which pins I should focus on?  Is there a way to test continuity between LPC header pins and the motherboard?

Thanks for any help you can provide.

[Checking continuity between motherboard and LPC header]

On a 1.4 revision, are there test points I can use to verify continuity between the motherboard and LPC header pins?  I tried to find them myself but I have had some difficulty.  Just wondering if anyone knew an easier way.