# Avoid SSS printing

**URL:** <https://www.ruby-forum.com/t/avoid-sss-printing/229985>\
**Category:** GNU Radio\
**Created:** [May 25, 2014, 3:47pm UTC](https://www.ruby-forum.com/t/avoid-sss-printing/229985 "2014-05-25T15:47:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\
**Post date:** [May 25, 2014, 3:47pm UTC](https://www.ruby-forum.com/t/avoid-sss-printing/229985/1 "2014-05-25T15:47:01Z")

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Hi All,

I am running a program that prints information in console. In one  
machine I  
am getting a lot of ‘SSSSSSS’ and gets pretty annoying sometimes.  
I have read that this is related with overrun problem, however the  
program  
is running correctly.

Is there a way to avoid this?? Can I mask ‘S’ printing in console from  
Gnu  
Radio??

greetings.

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**Author:** ![Mauricio\_Olivera](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@Mauricio\_Olivera](https://www.ruby-forum.com/u/Mauricio_Olivera)\
**Post date:** [May 25, 2014, 4:51pm UTC](https://www.ruby-forum.com/t/avoid-sss-printing/229985/2 "2014-05-25T16:51:36Z")

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Hi Mauricio,

I’m going to go ahead and assume you’re using an Ettus device, because  
then these ‘S’ indicate a sequence error [1], not an underrun.  
As this means that data reached your PC in the wrong order and most  
probably could not be reordered. Your signal could be defective.

Don’t ignore this warning.

Please comment on the USRP you are using.

I’ve cross-posted this to removed\_email\_address@domain.invalid [2], since it is  
not a GNU Radio error, but a hardware/operating system problem, possibly  
something with your Network Card or USB3 host controller (depends on  
what device you are using).

Greetings,  
Marcus

[1] compare: uhd/host/lib/usrp/common/async\_packet\_handler.hpp  
[2] subscribe on  
[http://lists.ettus.com/mailman/listinfo/usrp-users\_lists.ettus.com](http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com)