Hi, be also sure to plug the cable firmly on both ends. I've seen it more than once with a cable "half-plugged" and then it becomes usb2, not usb3.
My 2 cents. Regards, Cédric. On 3/18/20 2:54 PM, Marcus Müller via USRP-users wrote: > Hi Rodolphe, > > first of all, check whether you're actually dealing with a USB3 port. I > know, sounds strange, but if it's not blue and doesn't have more than > four visible contacts, it's not standard-compliant USB3. The fact that > it's attached to a xHCI doesn't itself mean it can do USB3. > > Then, I can't quite remember whether the USB controller on the B200 > would even register as USB3 before the initial firmware is loaded. Try > the following: In one terminal window, run `dmesg -Hwx`. Plug in the > USRP, and see how it appears on the bus (it seems, as USB2 high-speed > device). After that, in another terminal, you'd run `uhd_find_devices`, > and see whether the device re-enumerates as USB3 SuperSpeed device. > > Best regards, > Marcus > > On 18.03.20 13:43, Rodolphe Bertolini via USRP-users wrote: >> Hello Ron, (I resend the email, I forgot to "reply to all") >> Thank you for your quick feedback. >> >> Ok I understand. More information, lspci gives me : >> 00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI >> Host Controller (rev 10) >> So I don't get why doesn't Ubuntu enables USB 3.0 with the B210. >> >> My problems looks like this one >> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2018-July/057323.html >> >> The output of lsusb -t is similar, with "Driver=(none)" >> A message of above mentioned thread suggests to enable 3.0 option in >> BIOS, however I don't have such option. And even if I had, I didn't not >> change anything between reboot / session switch so I really don't >> understand where this regression is coming from. >> Also I did the "solution" mentioned by the author : >> >> uhd_image_loader --args="type=b200,reset" >> >> >> Which did not improve the situation. >> >> >> Thank you again >> >> Rodolphe >> >> Le mer. 18 mars 2020 à 12:02, Ron Economos via USRP-users >> <usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> a écrit : >> >> dmesg should say "new SuperSpeed USB device number X using xhci_hcd" >> or "new SuperSpeed Gen 1 USB device number X using xhci_hcd" if you >> have a newer kernel. >> >> "high-speed" means USB 2.0. >> >> Ron >> >> On 3/18/20 03:41, Rodolphe Bertolini via USRP-users wrote: >>> Dear all, >>> >>> I have been using a USRP B210 on a laptop for months now. For >>> reasons, I switched to another Linux session, and using this >>> session UHD fails to talk to B210 over USB 3.0 >>> >>> dmesg tells me it is using the xhci_hcd driver (which I believe is >>> the driver for USB 3.0), and is also mentioning "new high-speed >>> USB", which leads me to think that USB 3.0 link is well recognized >>> and active: >>> >>> [ 306.133028] usb 1-1: new high-speed USB device number 16 using >>> xhci_hcd >>> [ 306.260349] usb 1-1: New USB device found, idVendor=2500, >>> idProduct=0020 >>> [ 306.260351] usb 1-1: New USB device strings: Mfr=1, Product=2, >>> SerialNumber=3 >>> [ 306.260352] usb 1-1: Product: USRP B200 >>> [ 306.260354] usb 1-1: Manufacturer: Ettus Research LLC >>> [ 306.260355] usb 1-1: SerialNumber: 31B9289 >>> >>> However, when running any uhd command line, it fails using USB 3.0: >>> >>> [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; >>> UHD_3.15.0.0-release >>> [INFO] [B200] Detected Device: B210 >>> [INFO] [B200] Operating over USB 2. >>> >>> I have also tried with UHD 3.14.1, no improvement. >>> >>> I remember having a similar issue (maybe the same?) that had been >>> solved with something related to udev, but I sadly didn't take any >>> note of this. >>> >>> Do you have any hint? >>> >>> Thank you. >>> Regards, >>> Rodolphe >>> >>> _______________________________________________ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
