After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

RE: After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

runsiv — Tue, 17 Feb 2026 09:15:40 GMT

[quote user="BrianW"]

Sorry, I haven't managed to get my wireshark to do proper capture as I don't have (apparently) the right USB wifi dongle... (any recommendations that definitely work?)

[/quote]

In general we recommend intel based wi-fi 6 chipset, for example AX200, I would also note that the support in Windows for wifi sniffing is limited, so there is no support for monitor mode in Windows

[quote user="BrianW"]

Sure : what do they want?

[/quote]

If possible your application or something that can replicate the issue on a DK.
Regards

Runar

RE: After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

BrianW — Wed, 11 Feb 2026 16:19:32 GMT

Hi,

[quote userid="122502" url="~/f/nordic-q-a/126949/after-migration-ncs-2-9-0-to-ncs-3-1-1-wifi-wpa-psk-connection-no-longer-works/560888"]1. Is it possible to get a sniffer trace so we can check if the EAPoL frame is getting lost? [/quote]

Sorry, I haven't managed to get my wireshark to do proper capture as I don't have (apparently) the right USB wifi dongle... (any recommendations that definitely work?)

[quote userid="122502" url="~/f/nordic-q-a/126949/after-migration-ncs-2-9-0-to-ncs-3-1-1-wifi-wpa-psk-connection-no-longer-works/560888"]2. Is it possible to get more information about the application so we can see if anything is missing? [/quote]

Sure : what do they want?

[quote userid="122502" url="~/f/nordic-q-a/126949/after-migration-ncs-2-9-0-to-ncs-3-1-1-wifi-wpa-psk-connection-no-longer-works/560888"]3. Can you try to set -DCONFIG_NRF_WIFI_RX_STBC_HT=n in NCS 3.1.1 and see if it helps?[/quote]

I'll try this next time I have a chance : I have had to revert to 2.9.0 to be able to deliver other functionality to customers as 3.1.1 just wasn't working....

RE: After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

runsiv — Wed, 11 Feb 2026 10:27:23 GMT

Update from R&D

1. Is it possible to get a sniffer trace so we can check if the EAPoL frame is getting lost?

2. Is it possible to get more information about the application so we can see if anything is missing?

3. Can you try to set -DCONFIG_NRF_WIFI_RX_STBC_HT=n in NCS 3.1.1 and see if it helps?

Regards

Runar

RE: After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

runsiv — Wed, 11 Feb 2026 07:53:16 GMT

Hi Brian
I could not find anything and have asked the wifi team and will update when I hear from them. I recall there was a similiar issue back in NCS 2.6.x but that was fixed in NCS 2.7

Regards

Runar

RE: After migration NCS 2.9.0 to NCS 3.1.1, wifi WPA-PSK connection no longer works?

BrianW — Tue, 10 Feb 2026 13:23:57 GMT

I note I ran into the same issue last time I tried to update to 3.x:

RE: Update to NCS3.0.0 broke wifi WPA2-PSK connect?

and never got an answer or fix as to what the problem was. My suspicion for 3.0.0 was that I was also trying to use a single heap, so the heap for libc was 0 sized and potentially an issue for mbedtls. However, this is not the case as the heap for libc in my prj.conf is 171000 bytes... (and my logs show its not running out... and there are no logs from either wifi stack or mbedtls complaining about it)