I am currently running CentOS 7.2, UHD rev 003.010.000, and GNU radio version 
3.7.11.  When I probe the USRP, it doesn’t read the daughtercards and provide 
the correct output for frequency, gain, bandwidth, etc.  Why would this occur?  
I believe I have all the revisions correct.  I have pasted the output I am 
seeing in the emil below.

Any help is appreciated.

Thank you

Mark

When I perform uhd_find devices, I get the output below.

linux; GNU C++ version 4.8.5; Boost_105300; UHD_003.010.000.git-249-gef57ffcb

--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
    type: x300
    addr: 192.168.10.2
    fpga: HG
    name:
    serial: F4717C
    product: X310


When I perform uhd_usrp probe, I get the output below.

linux; GNU C++ version 4.8.5; Boost_105300; UHD_003.010.000.git-249-gef57ffcb

-- X300 initialization sequence...
-- Determining maximum frame size... 1472 bytes.
-- Setup basic communication...
-- Loading values from EEPROM...
-- Setup RF frontend clocking...
-- Radio 1x clock:200
-- Detecting internal GPSDO.... Found an internal GPSDO
-- Initialize Radio0 control...
-- Performing register loopback test... pass
-- Initialize Radio1 control...
-- Performing register loopback test... pass
  _____________________________________________________
/
|       Device: X-Series Device
|     _____________________________________________________
|    /
|   |       Mboard: X310
|   |   revision: 4
|   |   product: 30410
|   |   mac-addr0: 00:80:2f:0a:e3:35
|   |   mac-addr1: 00:80:2f:0a:e3:36
|   |   gateway: 192.168.10.1
|   |   ip-addr0: 192.168.10.2
|   |   subnet0: 255.255.255.0
|   |   ip-addr1: 192.168.20.2
|   |   subnet1: 255.255.255.0
|   |   ip-addr2: 192.168.30.2
|   |   subnet2: 255.255.255.0
|   |   ip-addr3: 192.168.40.2
|   |   subnet3: 255.255.255.0
|   |   serial: F4717C
|   |   FW Version: 4.0
|   |   FPGA Version: 20.0
|   |
|   |   Time sources:  internal, external, gpsdo
|   |   Clock sources: internal, external, gpsdo
|   |   Sensors: gps_gpgga, gps_gprmc, gps_time, gps_locked, gps_servo, 
ref_locked
|   |     _____________________________________________________
|   |    /
|   |   |       RX DSP: 0
|   |   |   Freq range: -100.000 to 100.000 MHz
|   |     _____________________________________________________
|   |    /
|   |   |       RX DSP: 1
|   |   |   Freq range: -100.000 to 100.000 MHz
|   |     _____________________________________________________
|   |    /
|   |   |       RX Dboard: A
|   |   |   ID: Unknown (0x0093)
|   |   |   Serial: 30F2039
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       RX Frontend: 0
|   |   |   |   Name: Unknown (0x0093) - 0
|   |   |   |   Antennas:
|   |   |   |   Sensors:
|   |   |   |   Freq range: 0.000 to 0.000 MHz
|   |   |   |   Gain Elements: None
|   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
|   |   |   |   Connection Type: IQ
|   |   |   |   Uses LO offset: No
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       RX Codec: A
|   |   |   |   Name: ads62p48
|   |   |   |   Gain range digital: 0.0 to 6.0 step 0.5 dB
|   |     _____________________________________________________
|   |    /
|   |   |       RX Dboard: B
|   |   |   ID: Unknown (0x0093)
|   |   |   Serial: 30F2025
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       RX Frontend: 0
|   |   |   |   Name: Unknown (0x0093) - 0
|   |   |   |   Antennas:
|   |   |   |   Sensors:
|   |   |   |   Freq range: 0.000 to 0.000 MHz
|   |   |   |   Gain Elements: None
|   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
|   |   |   |   Connection Type: IQ
|   |   |   |   Uses LO offset: No
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       RX Codec: B
|   |   |   |   Name: ads62p48
|   |   |   |   Gain range digital: 0.0 to 6.0 step 0.5 dB
|   |     _____________________________________________________
|   |    /
|   |   |       TX DSP: 0
|   |   |   Freq range: -100.000 to 100.000 MHz
|   |     _____________________________________________________
|   |    /
|   |   |       TX DSP: 1
|   |   |   Freq range: -100.000 to 100.000 MHz
|   |     _____________________________________________________
|   |    /
|   |   |       TX Dboard: A
|   |   |   ID: Unknown (0x0092)
|   |   |   Serial: 30F29BC
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       TX Frontend: 0
|   |   |   |   Name: Unknown (0x0092) - 0
|   |   |   |   Antennas:
|   |   |   |   Sensors:
|   |   |   |   Freq range: 0.000 to 0.000 MHz
|   |   |   |   Gain Elements: None
|   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
|   |   |   |   Connection Type: IQ
|   |   |   |   Uses LO offset: No
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       TX Codec: A
|   |   |   |   Name: ad9146
|   |   |   |   Gain Elements: None
|   |     _____________________________________________________
|   |    /
|   |   |       TX Dboard: B
|   |   |   ID: Unknown (0x0092)
|   |   |   Serial: 30F2B48
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       TX Frontend: 0
|   |   |   |   Name: Unknown (0x0092) - 0
|   |   |   |   Antennas:
|   |   |   |   Sensors:
|   |   |   |   Freq range: 0.000 to 0.000 MHz
|   |   |   |   Gain Elements: None
|   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
|   |   |   |   Connection Type: IQ
|   |   |   |   Uses LO offset: No
|   |   |     _____________________________________________________
|   |   |    /
|   |   |   |       TX Codec: B
|   |   |   |   Name: ad9146
|   |   |   |   Gain Elements: None

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