there is a problem with Pi B+ and Wlan / Wifi connected to USB (this scenario works well with model B Pi)
Ethernet port is connected to Ethercat (would think this happen too on high load with two eth0 and wlan0 connections - to be proved) wlano0 is connected for example with EDIMAX or any other wlan device.
As soon we start the standard eth0 wired nic to communicate, the wifi communication immediately stops / led on the stick went off
Unplug / replug solves the problem but this is not a solution as soon we start the communication on eth0 again wifi disconnects again.
Anyone has an Idea?
Is there the possibility as in the old chip to give options in the /boot/cmdline.txt ?
What should we investigate when wifi get disconnected ?
What do I need to check?