Host specs: Ubuntu 20.04, UHD v4.4.0, GNU Radio V3.10.7

USRP Specs: E310 f-model, UHD v4.4.0

Hello everyone, 

I am fairly new to the SDR space and am learning as I go. I am trying to run a 
simple FM RX flowgraph from GNU Radio on my host machine to my USRP E310. I 
have verified that they are in the same network as I am able to access the USRP 
via SSH, ping both machines on either side, and can identify one another using 
*uhd_find_devices —args addr=<USRP_IP_ADDR>* and *uhd_usrp_probe —args 
addr=<URSP_IP_ADDR>.*

When I generate and run the flowgraph, I get a runtime error stating:\
*in __init__*

*self.uhd_usrp_source_0=uhd.usrp_source(\
rpc::timeout:Timeout of 2000ms while calling RPC function ‘get_num_xbars’*

uhd_usrp_probe does give me a few warnings:

*\[MPM.PeriphManager\] Skipping Hw/SW compatibility check!*

*\[MPM.PeriphManager\] Found more EEPROM paths than daughterboards. Ignoring 
some of them.*

*\[UHD\] The buffer could not be resized sufficiently. Target sock buff size 
2500000. Actual sock buff size 1048576.*

I ran *sudo sysctl -w net.core.wmem_max=2500000* to increase the buffer size.

My questions are, does this appear to be a problem with my flowgraph, the USRP 
settings, or host settings? What are somethings I should look into to solve 
this?
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