[USRP-users] Problems with Ettus B210 and Intel Nuk

Tathagata (T) tathagata at protonmail.ch
Tue Oct 31 16:14:00 EDT 2017


Hi Neel,

1. Indeed that is right. It seems that the newer NUCs with latest firmware consistently do not recognize B210s from cold boots.

2. That is correct.

Thanks
TM

> -------- Original Message --------
> Subject: Re: [USRP-users] Problems with Ettus B210 and Intel Nuk
> Local Time: October 31, 2017 2:11 PM
> UTC Time: October 31, 2017 6:11 PM
> From: neel.pandeya at ettus.com
> To: "Humphries, James R." <humphriesjr at ornl.gov>
> Tathagata (T) <tathagata at protonmail.ch>, usrp-users at lists.ettus.com <usrp-users at lists.ettus.com>
>
> Hello Tathagata:
>
> If I recall from a separate conversation, after you upgraded the BIOS on this Intel NUC, the system would no longer recognize the B210, right?
>
> Before the BIOS upgrade, the B210 would still be recognized, but only after a long 30- or 60-second delay, right?
>
> --Neel Pandeya
>
> On 31 October 2017 at 10:52, Humphries, James R. via USRP-users <usrp-users at lists.ettus.com> wrote:
>
>> [Hey T,]
>>
>> I encountered a problem similar to this in the past with a Minnowboard Max. If you press the reset switch (S700 I believe), is the NUC able to see the B210 (instead of unplugging USB)? I had to do this if I had a B200 plugged into the Minnowboard while it booted.
>>
>> The solution we came up with was to install a larger capacitor in parallel with C716/S700. I recall installing a 100uF capacitor. This allowed some extra time before the Cypress USB chip on the B200 powered up and it would work normally after a cold boot.
>>
>> Obviously, if you want to try I assume it will void your warranty on the B210, so proceed at your own risk.
>>
>> I think B200mini alleviated this ‘issue’ as it has a reset supervisor (TPS3801).
>>
>> -Trip
>>
>> From: USRP-users [mailto:usrp-users-bounces at lists.ettus.com] On Behalf Of "Tathagata (T)" via USRP-users
>> Sent: Tuesday, October 31, 2017 12:09 AM
>> To: usrp-users at lists.ettus.com
>> Subject: [USRP-users] Problems with Ettus B210 and Intel Nuk
>>
>> Hi,
>>
>> We have a problem with Ettus B210 on an Intel Nuk. Briefly when we plug in the SDR into the USB port of the Intel Nuk, it is not recognized. The Nuk is running Ubuntu 16.04. The attached document details the debugging steps that we have taken and the errors that we are getting.  We never had this problem before and it suddenly started and we have no clue as to what is going wrong. Any help would be highly appreciated.
>>
>> Thanks
>>
>> T
>>
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>> USRP-users at lists.ettus.com
>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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