Possible 9151 Firmware Issue

[gterrell]

Testing a new nRF9151 device using a project derived from the Nordic "HTTPS client" sample project. We are experiencing a "Modem has crashed" event intermittently when running our code. To verify the source was not our derived source code or our device; I reverted to the original Nordic sample code without any alteration and switched hardware to the nRF9151 DK.

The build is using the following Extra Kconfig fragments: overlay-tfm-nrf91.conf, overlay-pdn-nrf91-ipv4.conf (Nordic sample files) and overlay-segger-rtt.conf (LooUQ provided/attached).

The build has debugging enabled (-Og).

The crash error happens about every 3 or 4 executions of the code. 

Is this a known issue? Workarounds?

[Benjamin]

Alright, I understand.

To narrow this down further, could you clarify the following:

• Is it true that this issue occurs on both your custom board and the nRF9151DK?
• Does the issue occur when you build without debugging options?
• Are you able to run the HTTPS client sample as-is, without any overlay files?

Best regards,

Benjamin

[gterrell]

Update... I have the UART working now, so I can pull RTT and debugging out of the equation. I am testing only with the 9151DK right now and do not see the problem in about 10 test runs with the sample "as-is". 

I understand the variables to adjust: debugging and overlays. You can either close the ticket and I can re-open if I have a more reproduceable pattern. Or leave it open for 7-10 days. I will get back to it, but it will be at least the end of the week.

[Benjamin]

That's great to hear Greg! I'll close this ticket. You're welcome to open a new anytime. Please refer to this ticket in a new one if needed.

Best regards,
Benjamin