Analog Discovery 2, MacOS, stopped working after working for weeks

[JSnell]

Problem is reported in a pop-up message-

JtscInitScanChain failed ERC: 0x3E9

Device programming failed.

 

Waveforms does not connect - though it does see the AD2 serial number and allows me to "Select" Discovery2 - but does not connect.

My serial number is SN:210321A19DA5

 

With the AD2. I am using an external supply - and this USB has been working with no problems for about 2 months.

Today this problem started after never seeing any problems.

 

I tried a different USB. I tried reinstalling the Waveforms software. I have tried disconnecting (the USB) and power cycling the AD2.

[JSnell]

I am adding a further update to this question.

 

I borrowed another AD2 to try and it does the same thing the original - suggesting this is a MacOS problem rather than an AD2 problem.

But it remains a problem....

[JSnell]

Yet another update to this problem. I Tried the AD2 on a different computer (Mac Laptop 10.12.2) where Waveforms had worked with this unit previously - and it worked. (They both worked.)

So there is clearly a computer problem.

Next I completely shutdown the Mac (with the problem) - power down - and power cycled the powered usb hub(s). Then restarted.

Now Waveforms is able to connect to (both of) the AD2. Apparently a reboot of the Mac was not enough to solve the problem (no the usb hub because I had tried plugging directly into the Mac (a Mac Pro Late 2013)...

So there you go... hopefully this can help someone else.

[attila]

Hello,

Good to know your problem is solved and thank you for the feedback.

I also noticed similar USB stuck issue on OS X.
What seemed to help me was to reboot having USB devices disconnected.