I'm going to guess the root cause is power: - I recently heard some folks wishing for an external power connector for their minis due to power issues. - My B200 will brown out on a 6ft cable, and usually works fine on the 3ft - My laptop will switch from charging to discharging when I push the B200 hard - My laptop often fails to negotiate USB3 when on batteries, falling back to USB2 - Powering my B200 with an external supply makes all of these issues go away.
Also, you can just use uhd_usrp_probe to load the firmware and test the connection... might be a little bit quicker than using gnuradio-companion. On Fri, Feb 5, 2016 at 11:34 AM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 02/05/2016 01:40 PM, Michael Skaggs wrote: >> >> Hello, >> >> I recently started working with the Ettus B200mini board in GNU Radio and >> I appear to be having issues with the detection of USB 3.0. The system I am >> working on is a Dell Latitude E6530 with Ubuntu 14.04. I just yesterday >> updated to the latest version of GNU Radio and UHD by running the >> build-gnuradio script. >> >> The issue I am having is when I plug the B200mini into one of the USB 3.0 >> ports, it is only detected by GNU Radio Companion as USB 3.0 maybe 1 out of >> 20 times I plug it in, sometimes less often. When it detects as USB 3.0 it >> is a full speed connection with no issues, when detected at USB 2.0, it is >> much slower, but appears to work fine. >> >> I am almost 100% certain this is an issue with the B200mini only. I have >> two of the boards with two different cables, both of them have the detection >> issue. I also have tried using a B210 multiple times on the laptop with no >> issues. The B210 never once detected as USB 2.0 when I plugged it in and >> programmed it through GRC. "lsusb" also detects the USB 3.0 root hub every >> single time. >> >> Does anyone have any idea what might be going on? >> >> Thanks in advance, >> Michael >> > Do you know what type of USB-3.0 controller you have on the laptop? Have > you tried on another computer? > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- GDB has a 'break' feature; why doesn't it have 'fix' too? _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
