Dave, I can’t speak to anything that might be happening because of recent code changes, but I would recommend you doing a quick switch of the cables/ports to see if the problem follows the cable/SFP/Port jut in case it’s a coincidence that you did the firmware update at that time. I’ve had problems with those passive Twin-Ax cables being quirky occasionally, and there were some cheap brands we could never get to work when I originally qualified various SFP’s and Cables.
It’s hard to imagine a firmware problem causing a long delay like this at the physical level, the link negotiation is a largely automatic process between both ends. -Ian > On Nov 26, 2018, at 3:17 PM, Dave NotTelling via USRP-users > <usrp-users@lists.ettus.com> wrote: > > I have been messing with the XG image for my X310 and have run into a strange > issue. First, here is the system setup: > Intel X710 dual 10 Gb/s SFP+ NIC > 2x SFP+ direct attach copper cables > X310 (revision 4) > 2x UBX-160 (both v1 boards) > UHD_3.13.1.HEAD-0-ga0a71d10 > Ubuntu 16.04 > When I updated the firmware of the radio I noted that port 0 was not showing > up as having a link (per ethtool). I changed UHD versions several times and > flashed the radio after each version change. At some point I walked away for > ~ 15 minutes, and when I came back the link was established and > uhd_find_devices was happy. I rebooted and was able to repeat this process > several times. It seems that it takes ~ 10-20 minutes for the link to show > as active in Linux. The radio shows lights on both port 0 and 1, but only > port 1 comes up right away on the NIC. > > Any ideas as to why this is happening? It's a real bummer because while > testing my current code, it's easy to get the radio into a bad state that > requires restarting it. Then I get to wait for the link to come up. > > Thanks! > > -Dave > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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