nRF Connect Programmer hangs on start

[Jackson Wilson]

Configuration:

• nRF Connect for Desktop v3.7.0
• Programmer v1.4.11
• PCA10040 v2.0.0 EVK (date code 2020.39)
• When Programmer app does start Log says: "Using nrfjprog library 10.12.1, pc-nrfjprog-js 1.7.6". 
• OS: Windows 10.

I can program debug with this EVK using SES.

When I start the Programmer app with the EVK plugged in, Programmer app hangs with blank screen.

I have tried upgrading/downloading EVK J-Link to v6.92 and 6.44e.  With 6.44e, sometimes Programmer will start, then hang when I attempt to select this J-Link.

CTRL+R while Programmer is stuck will re-start it (spinning wheel), then it goes blank again. 

I can get no log output to debug the issue from Programmer, since it just hangs with blank screen.

Any suggestions?

[Jackson Wilson]

Additional debugging:

I tested a second computer with the same EVK and nRF Connect/Programmer versions and everything worked.

Then I went back to the initial machine (System Report above) and removed all other USB hubs and devices.  In that configuration Programmer functions correctly.

By process of elimination I found that a Brother ADS-1200 scanner causes the failure of Programmer to start and/or detect attached J-Link.  Or, powering off the scanner fixes Programmer (not enumerated in Device Manager).

There is some USB conflict with the scanner.  

I can work around this issue, but it should be investigated and addressed by Nordic to ensure that the Programmer functions regardless of other USB devices connected to the computer. 

[Jared]

Hi,

Thank you for this additional information. I'll update our internal team that is currently investigating this.

best regards

Jared