hola:
Mientras sigo tu consejo y leo la entrada de la conexión de la tarjeta wifi, mando unas líneas que he recibido con el comando dmesg (he recortado y solo pongo las que considero mas interesantes) antes de insertar la tarjeta:
root@OpenWrt:~# dmesg
[ 0.000000] 64MB of RAM installed
[ 0.000000] board_bcm963xx: Boot address 0xbe000000
[ 0.000000] board: board name: HW556_C
[ 0.000000] MIPS: machine is Huawei EchoLife HG556a (version C)
[ 0.280000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.324000] console [ttyS0] enabled
[ 0.332000] bootconsole [early0] disabled
[ 0.600000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 0.616000] Bridge firewalling registered
[ 0.620000] 8021q: 802.1Q VLAN Support v1.8
[ 4.424000] usbcore: registered new interface driver usbfs
[ 4.432000] usbcore: registered new interface driver hub
[ 4.436000] usbcore: registered new device driver usb
[ 4.452000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.476000] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
[ 4.500000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00, overcurrent ignored
[ 4.508000] hub 1-0:1.0: USB hub found
[ 4.512000] hub 1-0:1.0: 2 ports detected
[ 4.528000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.548000] ohci-platform ohci-platform: new USB bus registered, assigned bus number 2
[ 4.624000] hub 2-0:1.0: USB hub found
[ 4.628000] hub 2-0:1.0: 2 ports detected
[ 4.832000] usb 1-2: new high-speed USB device number 2 using ehci-platform
[ 4.972000] hub 1-2:1.0: USB hub found
[ 4.976000] hub 1-2:1.0: 4 ports detected
[ 7.924000] eth0: link UP - 100/full - flow control off
[ 10.928000] eth0: link DOWN
[ 15.044000] uhci_hcd: USB Universal Host Controller Interface driver
[ 15.452000] usbcore: registered new interface driver r8188eu
[ 15.892000] usbcore: registered new interface driver rtl8187
[ 15.968000] rt2800pci 0000:00:01.0: failed to load eeprom property
[ 15.976000] ieee80211 phy0: rt2x00lib_request_eeprom_file: Info - Loading EEPROM data from 'rt2x00.eeprom'.
[ 15.988000] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 3572, rev 0223 detected
[ 15.996000] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0008 detected
[ 16.004000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 16.072000] usbcore: registered new interface driver rtl8192cu
[ 22.580000] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 24.344000] eth0: link UP - 100/full - flow control off
[ 24.352000] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 32.220000] device eth0.1 entered promiscuous mode
[ 32.224000] device eth0 entered promiscuous mode
[ 32.240000] br-lan: port 1(eth0.1) entered forwarding state
[ 32.248000] br-lan: port 1(eth0.1) entered forwarding state
[ 33.620000] eth0: link UP - 100/full - flow control off
[ 34.252000] br-lan: port 1(eth0.1) entered forwarding state
[ 480.920000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2860.bin'
[ 481.140000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.34
[ 481.264000] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 481.312000] device wlan0 entered promiscuous mode
[ 481.316000] br-lan: port 2(wlan0) entered forwarding state
[ 481.320000] br-lan: port 2(wlan0) entered forwarding state
[ 481.488000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 483.324000] br-lan: port 2(wlan0) entered forwarding state
[ 542.104000] [<832e436c>] rt2800_get_txwi_rxwi_size+0x1a0/0x26c [rt2800lib]
[ 637.880000] device wlan0 left promiscuous mode
[ 637.884000] br-lan: port 2(wlan0) entered disabled state
[ 640.944000] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 644.884000] wlan0: authenticate with xx:xx:xx:xx:fc:f4
[ 644.936000] wlan0: send auth to xx:xx:xx:xx:fc:f4 (try 1/3)
[ 644.944000] wlan0: authenticated
[ 644.956000] wlan0: associate with xx:xx:xx:xx:fc:f4 (try 1/3)
[ 644.980000] wlan0: RX AssocResp from xx:xx:xx:xx:fc:f4 (capab=0x411 status=0 aid=3)
[ 644.988000] wlan0: associated
[ 644.988000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
root@OpenWrt:~#
y después de insertar la tarjeta:
root@OpenWrt:~# dmesg
[ 0.000000] Linux version 3.18.17 (buildbot@builder1) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r46018) ) #1 Fri Jul 3 16:32:38 CEST 2015
[ 0.000000] board_bcm963xx: Boot address 0xbe000000
[ 0.000000] board: board name: HW556_C
[ 0.000000] MIPS: machine is Huawei EchoLife HG556a (version C)
[ 0.280000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.284000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.324000] console [ttyS0] enabled
[ 0.332000] bootconsole [early0] disabled
[ 0.600000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 0.616000] Bridge firewalling registered
[ 0.620000] 8021q: 802.1Q VLAN Support v1.8
[ 4.424000] usbcore: registered new interface driver usbfs
[ 4.432000] usbcore: registered new interface driver hub
[ 4.436000] usbcore: registered new device driver usb
[ 4.452000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.464000] ehci-platform: EHCI generic platform driver
[ 4.468000] ehci-platform ehci-platform: EHCI Host Controller
[ 4.476000] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
[ 4.484000] ehci-platform ehci-platform: irq 18, io mem 0xfffe1300
[ 4.500000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00, overcurrent ignored
[ 4.508000] hub 1-0:1.0: USB hub found
[ 4.512000] hub 1-0:1.0: 2 ports detected
[ 4.528000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.536000] ohci-platform: OHCI generic platform driver
[ 4.544000] ohci-platform ohci-platform: Generic Platform OHCI controller
[ 4.548000] ohci-platform ohci-platform: new USB bus registered, assigned bus number 2
[ 4.556000] ohci-platform ohci-platform: irq 13, io mem 0xfffe1400
[ 4.624000] hub 2-0:1.0: USB hub found
[ 4.628000] hub 2-0:1.0: 2 ports detected
[ 4.832000] usb 1-2: new high-speed USB device number 2 using ehci-platform
[ 4.972000] hub 1-2:1.0: USB hub found
[ 4.976000] hub 1-2:1.0: 4 ports detected
[ 5.252000] usb 1-2.2: new high-speed USB device number 3 using ehci-platform
[ 7.920000] eth0: link UP - 100/full - flow control off
[ 15.044000] uhci_hcd: USB Universal Host Controller Interface driver
[ 15.452000] usbcore: registered new interface driver r8188eu
[ 15.888000] usbcore: registered new interface driver rtl8187
[ 15.964000] rt2800pci 0000:00:01.0: failed to load eeprom property
[ 15.972000] ieee80211 phy0: rt2x00lib_request_eeprom_file: Info - Loading EEPROM data from 'rt2x00.eeprom'.
[ 15.984000] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 3572, rev 0223 detected
[ 15.992000] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0008 detected
[ 16.000000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 16.064000] usbcore: registered new interface driver rtl8192cu
[ 22.608000] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 23.372000] eth0: link UP - 100/full - flow control off
[ 23.380000] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 32.280000] device eth0.1 entered promiscuous mode
[ 32.288000] device eth0 entered promiscuous mode
[ 32.300000] br-lan: port 1(eth0.1) entered forwarding state
[ 32.308000] br-lan: port 1(eth0.1) entered forwarding state
[ 32.660000] eth0: link UP - 100/full - flow control off
[ 34.312000] br-lan: port 1(eth0.1) entered forwarding state
[ 34.400000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2860.bin'
[ 34.416000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.34
[ 34.536000] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 37.888000] wlan0: authenticate with xx:xx:xx:xx:fc:f4
[ 37.920000] wlan0: send auth to xx:xx:xx:xx:fc:f4 (try 1/3)
[ 37.928000] wlan0: authenticated
[ 37.936000] wlan0: associate with xx:xx:xx:xx:fc:f4 (try 1/3)
[ 37.944000] wlan0: RX AssocResp from xx:xx:xx:xx:fc:f4 (capab=0x411 status=0 aid=7)
[ 37.952000] wlan0: associated
[ 37.956000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
No se sí hay algo extraño, pero si lo hay yo no lo veo.
Ya os diré como va mi experiencia, os ruego que me perdonéis si insisto, pero mis conocimientos de linux son escasos.
Saludos
Alfonso
Editado por Tki2000 porque descuadraba mucho el foro y para borrar los datos de la MAC.