EnvironmentWandboard DUAL C1Ubuntu Trusty using these instructionIssueI was able to install Ubuntu Trusty and I am failing to get the Wifi driver to work.root@ubuntu-armhf:~# uname -aLinux ubuntu-armhf 3.10.17.1-wand-armhf.com #1 SMP Tue Jun 3 21:34:30 UTC 2014 armv7l armv7l armv7l GNU/LinuxKernel messagesroot@ubuntu-armhf:~# dmesg | grep brcmbrcmfmac: F1 signature read @0x18000000=0x16044330brcmfmac: brcmf_sdbrcm_download_code_file: Fail to request firmware -2brcmfmac: _brcmf_sdbrcm_download_firmware: dongle image file download failedbrcmfmac: brcmf_bus_start: brcmf_sdbrcm_bus_init failed -1brcmfmac: brcmf_sdbrcm_probe: dongle is not respondingbrcmfmac: brcmf_sdio_probe: device attach failedbrcmfmac: brcmf_ops_sdio_probe: F2 error, probe failed -19...Driversroot@ubuntu-armhf:~# cd /lib/firmware/brcm/root@ubuntu-armhf:/lib/firmware/brcm# ls -altotal 3256drwxr-xr-x  2 root root   4096 Oct 24 11:08 .drwxr-xr-x 61 root root  12288 Oct 23 21:19 ..-rw-r--r--  1 root root 269595 Oct 23 23:28 bcm4329-fullmac-4.bin-rw-r--r--  1 root root  96224 Oct 23 23:28 bcm43xx-0.fw-rw-r--r--  1 root root    180 Oct 23 23:28 bcm43xx_hdr-0.fw-rw-r--r--  1 root root 348160 Oct 23 23:28 brcmfmac43236b.bin-rw-r--r--  1 root root 455745 Oct 23 23:28 brcmfmac43241b0-sdio.bin-rw-r--r--  1 root root 403855 Oct 23 23:28 brcmfmac43241b4-sdio.bin-rw-r--r--  1 root root 253748 Oct 23 23:28 brcmfmac4329-sdio.bin-rw-r--r--  1 root root   1311 Oct 23 23:28 brcmfmac4329-sdio.txt-rw-r--r--  1 root root 222126 Oct 23 23:28 brcmfmac4330-sdio.bin-rw-r--r--  1 root root   1791 Oct 23 23:28 brcmfmac4330-sdio.txt-rw-r--r--  1 root root 451566 Oct 23 23:28 brcmfmac4334-sdio.bin-rw-r--r--  1 root root 569291 Oct 23 23:28 brcmfmac4335-sdio.bin-rw-r--r--  1 root root 219557 Oct 23 23:28 brcmfmac43362-sdio.binAs suggested here and here, I have tried copying the 4329 and 4330 files to brcmfmacp-stdio.bin and brcmfmac-stdio.txt, but got different errors.cp brcmfmac4330-sdio.bin brcmfmac-sdio.bincp brcmfmac4330-sdio.txt brcmfmac-sdio.txtKERNEL message gives Firmware version but more messages show up.brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists caught my attention but I am not sure what to do with it.Hope someone can helproot@ubuntu-armhf:~# dmesg | grep brcmbrcmfmac: F1 signature read @0x18000000=0x16044330brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Oct 25 2011 19:34:12 version 5.90.125.104brcmfmac: brcmf_fws_init: enabled bdcv2 tlv signaling [1]usbcore: registered new interface driver brcmfmacbrcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already existsbrcmfmac: brcmf_add_if: ignore IF eventbrcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdbrcm_htclk: HT Avail request error: -123brcmfmac: brcmf_sdbrcm_dpc: failed backplane access over SDIO, halting operationbrcmfmac: brcmf_netdev_start_xmit: xmit rejected state=0brcmfmac: brcmf_sdbrcm_bus_rxctl: resumed on timeoutbrcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdbrcm_htclk: HT Avail request error: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdcard_set_sbaddr_window: failed at addr:0x1000abrcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000a=00, Err: -123brcmfmac: brcmf_sdcard_set_sbaddr_window: failed at addr:0x1000abrcmfmac: brcmf_sdio_ramrw: FAILED to set window back to 0x18000000brcmfmac: brcmf_fil_cmd_data: Failed err=-110brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -110brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -5brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -5brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -5brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -5brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: brcmf_notify_escan_complete: Scan abort  failedbrcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing to do.brcmfmac: brcmf_set_mpc: fail to set mpcbrcmfmac: brcmf_btcoex_boost_wifi: attempted to restore not saved BTCOEX paramsbrcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdbrcm_htclk: HT Avail request error: -123brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdioh_request_byte: Failed to read byte F1:@0x1000e=ff, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to read byte F1:@0x1000e=ff, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to read byte F1:@0x1000e=ff, Err: -123brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdbrcm_bus_stop: Failed to force clock for F2: err -123brcmfmac: brcmf_sdioh_f0_write_byte: Disable F2 failed:-5brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F0:@0x00002=02, Err: -5brcmfmac: brcmf_sdioh_f0_write_byte: Disable F2 failed:-5brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F0:@0x00002=02, Err: -5brcmfmac: brcmf_sdioh_f0_write_byte: Disable F2 failed:-5brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F0:@0x00002=02, Err: -5brcmfmac: brcmf_sdio_regrw_helper: failed with -5brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdioh_request_word: Failed to write word, Err: 0xffffff85brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdioh_request_byte: Failed to write byte F1:@0x1000e=10, Err: -123brcmfmac: brcmf_sdio_regrw_helper: failed with -123brcmfmac: brcmf_sdbrcm_htclk: HT Avail request error: -123brcmfmac: F1 signature read @0x18000000=0x16044330brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Oct 25 2011 19:34:12 version 5.90.125.104brcmfmac: brcmf_fws_init: enabled bdcv2 tlv signaling [1]brcmfmac: brcmf_fil_cmd_data: Failed err=-512brcmfmac: brcmf_fil_cmd_data: Failed err=-512brcmfmac: brcmf_dongle_scantime: Scan assoc time error (-512)brcmfmac: brcmf_fil_cmd_data: Failed err=-512brcmfmac: brcmf_netdev_open: failed to bring up cfg80211brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already existsbrcmfmac: brcmf_add_if: ignore IF eventbrcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already existsbrcmfmac: brcmf_add_if: ignore IF eventI can see the wlan0 interfacebut my driver doesn't seem to be functioning root@ubuntu-armhf:~# ifconfig wlan0wlan0     Link encap:Ethernet  HWaddr fc:4d:d4:c5:8f:a6            inet6 addr: fe80::fe4d:d4ff:fec5:8fa6/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:0 errors:0 dropped:0 overruns:0 frame:0          TX packets:45 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000           RX bytes:0 (0.0 B)  TX bytes:13599 (13.5 KB)Interfacesroot@ubuntu-armhf:~# more /etc/network/interfaces# interfaces(5) file used by ifup(8) and ifdown(8)# loopback network interfaceauto loiface lo inet loopback# primary network interfaceauto eth0iface eth0 inet dhcp#hwaddress ether DE:AD:BE:EF:CA:FE# wireless network interfaceauto wlan0iface wlan0 inet dhcp   wpa-ssid WLAN-A69E22   wpa-psk  FILTEREDBringing up wlan0root@ubuntu-armhf:~# ifdown wlan0Internet Systems Consortium DHCP Client 4.2.4Copyright 2004-2012 Internet Systems Consortium.All rights reserved.For info, please visit https://www.isc.org/software/dhcp/Listening on LPF/wlan0/fc:4d:d4:c5:8f:a6Sending on   LPF/wlan0/fc:4d:d4:c5:8f:a6Sending on   Socket/fallbackroot@ubuntu-armhf:~# ifup wlan0Internet Systems Consortium DHCP Client 4.2.4Copyright 2004-2012 Internet Systems Consortium.All rights reserved.For info, please visit https://www.isc.org/software/dhcp/Listening on LPF/wlan0/fc:4d:d4:c5:8f:a6Sending on   LPF/wlan0/fc:4d:d4:c5:8f:a6Sending on   Socket/fallbackDHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3 (xid=0x3de2c8c1)DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3 (xid=0x3de2c8c1)DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6 (xid=0x3de2c8c1)receive_packet failed on wlan0: Network is downTerminatedrfkillroot@ubuntu-armhf:~# rfkill list0: wifi-rfkill: Wireless LAN    Soft blocked: no    Hard blocked: no1: bluetooth-rfkill: Bluetooth    Soft blocked: no    Hard blocked: no5: phy3: Wireless LAN    Soft blocked: no    Hard blocked: no
How to troubleshoot and fix Wifi driver on Wandboard DUAL?
ubuntu;wifi;drivers;firmware