Someone told me that the USRP2 does not respond when connected to a 100/10 Mbps ethernet device. So, by default, the LEDs apparently do not turn on unless connected to a gigabit device.
Even though my ethernet device was a gigabit adapter, thee LEDs still did not turn on. That leads me to believe either a) the MDIX auto-negotiation is not working, or b) my ethernet device is not configured for gigabit speeds, even though it's capable of it. Does anyone else on the list have a device that uses the atl1e ethernet adapter? C On Wed, Nov 18, 2009 at 12:19 PM, Christopher Friedt <chrisfri...@gmail.com> wrote: > It would seem that the atl1e device does support manual MDI > configuration, according to this [1]. > > > > [1] http://lwn.net/Articles/289918/ > > On Wed, Nov 18, 2009 at 12:14 PM, Christopher Friedt > <chrisfri...@gmail.com> wrote: >> Hi list, >> >> I've connected a USRP2 to my laptop's gigabit ethernet [1] and the >> USRP2's ethernet indicator LED is not on. Running find_usrp2s returns >> zero results on my machine, while on another machine, using the same >> cable, the USRP2 is detected. >> >> I've read that some people have actually had it working well with the >> same gigabit ethernet device [2] and was hoping that someone else >> could say what the problem is here. My first instinct is to assume >> that the auto-negotiation process [3] is not working. It used to be >> the case, that if auto-negotiation was not working, a crossover cable >> would fix the problem. Does that sound like an accurate diagnosis / >> prognosis? >> >> Rather than buy a new cable, I might be able to add a bit of code to >> the kernel driver to allow for manual switching through a /sys entry >> (if the device supports such control operations), but I thought that I >> would ask the list for suggestions first. >> >> Cheers, >> >> Chris >> >> [1] atl1e driver >> >> 03:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit >> Ethernet Adapter (rev b0) >> >> [2] >> >> http://old.nabble.com/Netgear-GA311-%28Realtek-8169%29-and-USRP-2-td20908796.html >> >> [3] >> >> http://en.wikipedia.org/wiki/Ethernet_crossover_cable#Automatic_crossover >> > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
