解决不能打开wifi问题

opo

　　使用 命令svc wifi来调试，避免使用GUI  
　　
　　相关资料  https://community.freescale.com/thread/319407
　　
　　D/WifiService( 313): setWifiEnabled: true pid=892, uid=1000
　　
　　在源码目录下 frameworks/base/services/java/com/android/server/WifiService.java
　　
　　public synchronized boolean setWifiEnabled(boolean enable) {
　　enforceChangePermission();
     Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid()
     + ", uid=" + Binder.getCallingUid());
    if (DBG) {
   Slog.e(TAG, "Invoking mWifiStateMachine.setWifiEnabled\n");
   }
　　if (enable) {
      reportStartWorkSource();
    }
    mWifiStateMachine.setWifiEnabled(enable);
　　........................................................................................
　　 public void setWifiEnabled(boolean enable) {
        mLastEnableUid.set(Binder.getCallingUid());
        if (enable) {
            /* Argument is the state that is entered prior to load */
            sendMessage(obtainMessage(CMD_LOAD_DRIVER, WIFI_STATE_ENABLING, 0));
            sendMessage(CMD_START_SUPPLICANT);
        } else {
            sendMessage(CMD_STOP_SUPPLICANT);
            /* Argument is the state that is entered upon success */
            sendMessage(obtainMessage(CMD_UNLOAD_DRIVER, WIFI_STATE_DISABLED, 0));
        }
    }
　　.........................................................................................
　　/*
   * Caller might not have WRITE_SECURE_SETTINGS,
   * only CHANGE_WIFI_STATE is enforced
  */
　　long ident = Binder.clearCallingIdentity();
  try {
    handleWifiToggled(enable);
  } finally {
　　Binder.restoreCallingIdentity(ident);
  }
　　if (enable) {
   if (!mIsReceiverRegistered) {
   registerForBroadcasts();
   mIsReceiverRegistered = true;
  }
  } else if (mIsReceiverRegistered) {
    mContext.unregisterReceiver(mReceiver);
    mIsReceiverRegistered = false;
   }
　　return true;
}
　　
　　D/BluetoothAdapter(  892): 1103147976: getState() :  mService = null. Returning STATE_OFF
　　D/Tethering(  313): sendTetherStateChangedBroadcast 1, 0, 0
　　
　　D/WifiStateMachine( 313): CMD_START_SUPPLICANT
　　
E/NetdConnector(  313): NDC Command {11 softap fwreload wlan0 STA} took too long (538ms)
　　
　　E/WifiStateMachine(  313): Failed to reload STA firmware java.lang.IllegalStateException: command '35 softap fwreload wlan0 STA' failed with '400 35 Softap operation failed (Cannot assign requested address)'
　　
　　frameworks/base/wifi/java/android/net/wifi/WifiStateMachine.java
　　 DriverLoadedState
　　case CMD_START_SUPPLICANT:
                   Slog.d(TAG,"CMD_START_SUPPLICANT");
　　try {
                        mNwService.wifiFirmwareReload(mInterfaceName, "STA");
                    } catch (Exception e) {
                        loge("Failed to reload STA firmware " + e);
                        // continue
                    }
　　...........................................................................................
　　
　　./base/services/java/com/android/server/NetworkManagementService.java
　　public void wifiFirmwareReload(String wlanIface, String mode) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("softap", "fwreload", wlanIface, mode);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
　　.............................................................................................
　　
　　
W/SocketClient(   64): write error (Broken pipe)
　　
　　
D/CommandListener(   64): Setting iface cfg
　　
　　
D/CommandListener(   64): Trying to bring down wlan0
　　
　　
I/wpa_supplicant(  926): Successfully initialized wpa_supplicant
　　
　　
I/wpa_supplicant(  926): rfkill: Cannot open RFKILL control device
　　
　　
D/Tethering(  313): InitialState.processMessage what=4
D/Tethering(  313): sendTetherStateChangedBroadcast 0, 0, 0
I/wpa_supplicant(  926): rfkill: Cannot open RFKILL control device
E/wpa_supplicant(  926): nl80211: Could not configure driver to use managed mode
E/wpa_supplicant(  926): Could not read interface p2p0 flags: No such device
E/wpa_supplicant(  926): p2p0: Failed to initialize driver interface
I/wpa_supplicant(  926): wlan0: CTRL-EVENT-TERMINATING
E/WifiHW  (  313): Supplicant not running, cannot connect
E/WifiHW  (  313): Supplicant not running, cannot connect
E/WifiHW  (  313): Supplicant not running, cannot connect
E/WifiHW  (  313): Supplicant not running, cannot connect
E/WifiHW  (  313): Supplicant not running, cannot connect