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Unable to connect to Analog Discovery 2


Question

Hello!

Recently my Analog Discovery 2 stopped working, only with the one computer I need it to work with. I've had and have used the device for about 2 months now, and after not using it for a day, it has stopped being discovered by waveforms or this PC. 

Now I have read the other posts on this board before creating this, so I will tell you what I am experiencing:
- not detected by waveforms automatically, or in the list of devices in the "my device is not listed" menu
- not detected in device manager
- works perfectly & as expected with other PCs
- this USB C port works with other USB devices, both with, and without a USB C->A adapter

What I have done:
- restarted computer
- redownloaded Waveforms (with all options selected)
- reinstalled firmware onto AD2 from a computer with waveforms that could see the device
- tried several combinations of ports/adapters/usb micro cables

The only think I can see is that this one PC that it does not work with is using USB C ports, but that shouldn't be an issue, as it was working at the start of this week with those exact USB C ports.

Now that I think of it, this PC did update during a restart at the start of yesterday (seemingly just a regular windows update) and I didn't immediately attempt to use the device after, it is POSSIBLE it is that update, I'll try to roll it back now, but I'm not too hopeful.
Any other recommendations would be appreciated. Thanks

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11 answers to this question

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Posted (edited)

Ya okay, I rolled back the update and nothing changed.

Any ideas or next steps?

 

Edit: Just tried the device on one of the other PCs and it is no longer working... same usb cable, not even 1 hour apart from full functionality demonstrated
Edit 2: it works on the 2nd PC again*

Edited by criniod
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Posted (edited)

Hey @attila 
I have tried several USB cables (including original), sockets, and USB C-A adapters, all the same result

Edit: Image attached with what I see sometimes when plugging in device, this is not every time, maybe one in ten
image.png.80aca5921d9120e7c2d7a01256082180.png

Edited by criniod
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Okay, It is figured out right now. Will I be back in another hour saying it broke again? Maybe!

Solution: made a USB-C to USBmicro cable, that bypassed the use of an adapter dongle, and it is working now. 

I did attempt this with different dongles/splitters both with other devices and without other devices plugged into them, and it did not work. 
If you are reading this in the future: I hope male USB C to male microUSB cables are easier to find. :) 

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Posted (edited)

Update: after not touching the device at all, I am now getting the same "device descriptor request failed" error I was getting yesterday, using the cable setup where it worked perfectly 20 hours ago. I have since tested it on other PCs and other cables with the same result.

@attila I have tried all of the steps in what you have just linked, same result.

Edited by criniod
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Hi @criniod

It is most likely a contact issue.

Does the microUSB plug enter in the socket AD2 fully?
Some usb cables may have shorter metal tip. The plastic relief may hinder full insertion, this stumbling in the AD2 case.

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This was my concern as well, I tested it with a microUSB cable with a particularly short plastic shroud, such that the shroud was not in contact with the plastic AD2 housing when fully inserted, and saw similar results. 

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Hi @criniod

I still suspect there is a contact issue rather than damaged USB controller.
Please try using the device with an older computer/laptop with ordinal USB Type A connector.

For warranty and replacement contact the support.digilent at ni.com specifying the Date of Purchase, Seller and Purchase Order/ Web order Number

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Hey @attila

I guess my original post was not clear, included in "other PCs" was my old laptop with the classic USB A connector, so I can confirm it does not work. I receive the same Device Descriptor Request Failed error.

Thanks for the info, I'll look into that.

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