[Arm-dev] RT3072 Wireless Adapter on centos 7 RPI

[cjvijf at gmail.com]

Hello,

I am building a data-logger for a 'seismograph' on a RPI-2 running Centos 7.

Wireless is working, with another wireless usb adapter, but since this 
one is going to sit in a barn, I need a longer range wifi antenna.

The OS sees the device, and ifconfig shows a MAC address, but somehow it 
doesn't seem to come up. It does work on "regular" Centos 6, running
  on a laptop, no issues at all.

any ideas?  (I put some of the details below, it's wlan1 I am trying to 
make work)
9Not running anything IPV6, so don't know why that module was loaded.)

thanks,

Ron


[root at rpi2-1 ~]# uname -a
Linux rpi2-1 3.18.14-v7+ #794 SMP PREEMPT Sun Jun 7 12:50:51 BST 2015 
armv7l armv7l armv7l GNU/Linux

[root at rpi2-1 ~]# lsusb
Bus 001 Device 007: ID 148f:3072 Ralink Technology, Corp. RT3072 
Wireless Adapter

[root at rpi2-1 ~]# ifconfig -a
.
.
.
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
         inet 192.168.2.4  netmask 255.255.255.0  broadcast 192.168.2.255
         inet6 fe80::76da:38ff:fe6d:da2  prefixlen 64 scopeid 0x20<link>
         ether 74:da:38:6d:0d:a2  txqueuelen 1000 (Ethernet)
         RX packets 267  bytes 32204 (31.4 KiB)
         RX errors 0  dropped 2  overruns 0  frame 0
         TX packets 227  bytes 39749 (38.8 KiB)
         TX errors 0  dropped 0 overruns 0  carrier 0 collisions 0

wlan1: flags=4098<BROADCAST,MULTICAST>  mtu 1500
         ether e8:4e:06:58:1b:97  txqueuelen 1000 (Ethernet)
         RX packets 0  bytes 0 (0.0 B)
         RX errors 0  dropped 0  overruns 0  frame 0
         TX packets 0  bytes 0 (0.0 B)
         TX errors 0  dropped 0 overruns 0  carrier 0 collisions 0

[root at rpi2-1 ~]# lsmod
Module                  Size  Used by
arc4                    1745  2
rt2800usb              17886  0
rt2800lib              71839  1 rt2800usb
rt2x00usb               8517  1 rt2800usb
rt2x00lib              36704  3 rt2x00usb,rt2800lib,rt2800usb
mac80211              479583  3 rt2x00lib,rt2x00usb,rt2800lib
cfg80211              386516  2 mac80211,rt2x00lib
crc_ccitt               1153  1 rt2800lib
rfkill                 16651  2 cfg80211
ftdi_sio               30912  0
8192cu                528365  0
usbserial              22425  1 ftdi_sio
uio_pdrv_genirq         2958  0
uio                     8119  1 uio_pdrv_genirq
i2c_bcm2708             5006  0
i2c_dev                 6027  0
ipv6                  333976  26