[USRP-users] B210 with VMware

Neel Pandeya neel.pandeya at ettus.com
Thu Dec 4 11:10:14 EST 2014

Hello Ralph:

Thanks for sharing this. I'm glad to hear that you were able to get
everything working reliably. Do you have an idea why the upgrade to VMware
11 helped so much? What changed in VMware 11? There must be a difference in
the way the USB controllers appear/behave between VMware 10 and 11. What
does "lspci -v" return on your Kubuntu system when run under VMware 10 and
11? Which version of UHD have you been using?


On Wed, Dec 3, 2014 at 11:44 PM, Ralph A. Schmid, dk5ras via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Hi,
> sorry for posting this to three lists, but it affects them all. I kindly
> ask
> you being wise when sending a reply, if it really should go to all lists,
> too :)
> With my relative new USRP B210 I was not very lucky by means of stability,
> especially at higher sampling rates USB3.0 totally crashed, pulling the
> whole virtual USB subsystem in some non-responsive black hole, when using
> Kubuntu 14.04 with VMware 10 on a Windows 8.1 machine. Similar crashes
> occurred when using Kubuntu 14.04 and Debian 7 on the bare metal (same
> hardware, directly booted from µSD card). I tested this many weeks ago, so
> I
> don't know if this would be better now with all the changes made in uhd in
> the meantime. In the VM it also got a bit better over the time, at least at
> lower sampling rates, but it did not completely vanish.
> The real breakthrough came yesterday with an upgrade from VMware 10 to 11!
> For the very first time OpenBTS ran through the whole night using the B210,
> keeping a phone call alive between to test phones all the time. Gqrx ran in
> the old config only for minutes, yesterday after this change it ran through
> the whole afternoon at full 32MHz bandwidth. This morning I was able to
> start OpenLTE with a 1.4MHz wide LTE carrier, and it ran for 15 minutes,
> crashing only when I opened Outlook in the host system, probably stealing
> too much cycles from the guest system. In the previous setup it only ran
> for
> seconds up to a minute.
> So although many factors seemed to influence the issue (see my various
> frustrating bare metal experiences), one main factor was VMware what got
> much, much better now. I must check the release notes if they mention the
> overworked USB subsystem. Still some sour taste remains as the very similar
> BladeRF with its identical FX3 USB controller never ever showed such
> annoying behavior :)
> Ralph.
> _______________________________________________
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> USRP-users at lists.ettus.com
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