On 30/08/2023 10:57, Andrea De Jesus Torres via USRP-users wrote:
Hi everyone,
i am working with openairinterface, and i am experiencing a strange
behavior with the X310 (branded USRP-2954R before flashing).
When i run a code with a certain configuration file using a B210
everything works as expected, while when using an X310 i almost always
end seeing a flood of LLL on the screen.
That happens, for those who have familiarity with openairinterface,
either running the gNB or the UE.
The X310 is flashed with the XG firmware using uhd 4.4 (but also with
other 4.x versions happens the same) and connected to an Ubuntu 22.04
machine with an ethernet cable.
The USRP an the network interface are configured according to the
Ettus guide
https://kb.ettus.com/Getting_Started_with_4G_LTE_using_Eurecom_OpenAirInterface_(OAI)_on_the_USRP_2974
Though, with the uhd test utilities, like benchmark_rate, no issue appear.
Do you have any idea on how i could debug this situation?
Already asked the OpenAirInterface, but no reply yet.
thanks,
andrea
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Well, 'L' is "late packet". It's likely that the software is asking for
a packet time that is too "tight" given whatever latency is
produced by your systems network stack.
OAI probably needs to investigate this.
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