I know this can happen if the number of samples per packet (SPP) is too
large for your configuration. You could try manually setting a smaller SPP
value, say 300, and see if that works. More information about your setup
would be helpful.

Wade


On Sun, Jan 30, 2022 at 11:02 AM Marcus D. Leech <patchvonbr...@gmail.com>
wrote:

> On 2022-01-30 07:46, Dmitry Kupchinetsky wrote:
>
> Hi,
>
> during receive samples from usrp following error occur:
>
>
>
> [ERROR] [X300] 192.168.40.2: x300 fw communication failure #1
>
> EnvironmentError: IOError: x300 fw poke32 - reply timed out
>
> [ERROR] [X300] 192.168.40.2: x300 fw communication failure #2
>
> EnvironmentError: IOError: x300 fw poke32 - reply timed out
>
> [ERROR] [X300] 192.168.40.2: x300 fw communication failure #3
>
> EnvironmentError: IOError: x300 fw poke32 - reply timed out
>
> [ERROR] [UHD] An unexpected exception was caught in a task loop.The task
> loop will now exit, things may not work.EnvironmentError: IOError:
> 192.168.40.2: x300 fw communication failure #3
>
> EnvironmentError: IOError: x300 fw poke32 - reply timed out
>
>
>
> After this error there's no communication between host and usrp. What is a
> root cause of this error and does exist any work around?
>
>
>
> Regards,
>
> Kupchinetsky Dmitry.
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>
> So, a few questions:
>
> Does this happen immediately on start-up, or only after a considerable
> period?
>
> What sample rate(s)?
>
> Are you using the 1G or 10G interface?
>
> What type of host network card are you using?  Do you know if it's based
> on the Intel 82579LM chip?
>
> What version of UHD are you running?
>
> Are the error counters increasing on your networking interface?    On
> linux you can use "ifconfig" or "ip -s link" to display error statistics
>
>
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