[Discuss-gnuradio] USRP2 with Realtek r8169 Problem

[Soeren Peik]

Hi all,

I just received my USRP2 and hooked it up to a three month old Thinkpad 
Edge 13 intel with Realtek ethernet Chipset.

System is: Ubuntu 10.04 LTS Lucid Lynx
Firmware: txrx_wbx_raw_eth_20100608.bin
FPGA-FW: u2_rev3-20100603.bin
Daughterboard: WBX

When i run the fft application with  with sudo usrp2_fft.py -f98e6
I  get overruns "SSSSSSS" and the GUI hangs.

Changing the decimation does not help.
The USRP2 is operating as I can clearly see the local FM-Stations in the 
spectrum.

Older Threads suggested problems with inserted pauses. When checking 
with ethtool I get:

Settings for eth0:
    Supported ports: [ TP MII ]
    Supported link modes:   10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Link partner advertised link modes:  1000baseT/Half 1000baseT/Full
    Link partner advertised pause frame use: No
    Link partner advertised auto-negotiation: Yes
    Speed: 1000Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: pumbg
    Wake-on: g
    Current message level: 0x00000033 (51)
    Link detected: yes

And with nm-tools I get


- Device: eth0  [USRP Link] 
----------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             connected
  Default:           no
  HW Address:        C8:0A:A9:25:64:5E

  Capabilities:
    Carrier Detect:  yes
    Speed:           1000 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         192.168.10.1
    Prefix:          24 (255.255.255.0)
    Gateway:         0.0.0.0

This looks OK to be.


I do not get problems when transmitting.

Do you any suggestion for a fix?
Unfortunately, I do not have another computer here to try out other setups.


Thanks in advance,
Soeren