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Re: [Discuss-gnuradio] Netgear GA311 (Realtek 8169) and USRP 2

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Netgear GA311 (Realtek 8169) and USRP 2
Date: Mon, 08 Dec 2008 23:42:29 -0800
User-agent: Thunderbird (X11/20081119)

OK, it looks like we have some sort of problem with the RTL8169. Can you guys run the following program in its own window

       while ip -s link show dev eth0 | more -c && sleep 1 ; do : ;done

That will show you stats on the ethernet device. Then run find_usrps and see how many packets, drops, and errors see what happens. Do the same thing for when you run usrp2_siggen.

Also, please run ifconfig and send the output.


Felipe Gil Castiñeira wrote:
Hi Brett,

I had the same (bad) experience with a RTL-8169 card and USRP2:
approximately 75% of the time "find_usrps" can not detect the USRP2 (the
same for usrp2_fft.py).

I can not confirm the problem (just now I don't have another card with a
different chipset), but I suspect it is related to the RTL-8169 device.


Brett L. Trotter wrote:
The purpose of this email is to ask if anyone (out of the relatively few
USRP2 users) had happened to bump into this card and had similar
difficulty as well as to determine if this is repeatable on other
systems and thus warn others away from the headache I've encountered.

I've been successful with the Attansic Technology Corp. L1 on an AMD
board I have, but a Netgear GA311 produces odd results. find_usrps
works, but usrp2_siggen fails to identify the daughterboard. I believe
the GA311 is at fault. I was originally on Fedora Core 7 but upgraded to
10 after the initial problems.

Please let me know if you have any experience with this card in general,
or even better, with this card and a USRP2. I'm anxious to resolve the
issue (or return the card).

Thank you in advance.


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