UE cannot attach to 5MHz gNB

[oranresearcher]

I am trying to have a 5MHz gNB setup work. Unfortunately, the UE does not want to attach. I am not sure about what's wrong as I am able to have a 20MHz and 10MHz both working properly.

You can find the configurations used below:
ue1_zmq_5MHz.txt
gnb_e2_5MHz.txt

I am also attaching the log files:
gnb.log
ue1.log

All PCAPs are empty except the gNB ngap pcap file:
pcap.zip

[pgawlowicz]

you have to add the following in the srsue config:

[rat.nr]
...
max_nof_prb = 25
nof_prb = 25

[oranresearcher]

Highly appreciate your prompt response. Unfortunately, it seems attaching is still not possible.

I am attaching the log files and the non-empty PCAP:

Log files:
ue1.log
pcap.zip

PCAP:
gnb.log

[pgawlowicz]

The gnd and you never connected their zmq-based RF devices. You have to use the correct zmq ports in gnb and srsUE (unless you connect them over a gnuradio).

[oranresearcher]

Thank you for the help!

Indeed the combination of the two changes you proposed (adding max_nof_prb = 25, nof_prb = 25 to the UE configuration and aligning the ports between the gnb and UEs) has resolved the issue.