Re: [Discuss-gnuradio] RuntimeError: fifo ctrl timed out looking for acks

[Marcus Müller]

Dear Bakshi,

this error is from UHD, not GNU Radio; an appropriate mailing list
would be usrp-users (in CC:).

Please follow up *there* with information on which USRP you're using,
what you're doing, and the full console output (not just the error).

Best regards,
Marcus

On Tue, 2018-01-09 at 02:01 +0000, Bakshi, Arjun wrote:
> I get this error when trying to open 2 tx steams and 3 rx streams,
> where some usrps are both rx and tx: "RuntimeError: fifo ctrl timed
> out looking for acks"
> 
> I found a mention of the error on this page: http://www.ni.com/produc
> t-documentation/53455/en/
> 
> Which gives a workaround: Open an Rx and Tx session to the same list
> of devices. You can disable the unused channel in the session where
> you added it.
> 
> How do I interpret this in GRC? 
> 
> My specific setup is that I want to:
> --- TX using usrps with IP1 and IP2
> --- RX using usrps with IP1, IP3, and IP4
> 
> How do I go about doing this? How do I fill out the device args
> fields and make the connections?
> 
> Thanks,
> 
> AB
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