[quote="Montala"...... with the tiny Edimax adapter plugged directly into one of the USB ports on their Raspberry Pi, and with something like a Logitech keyboard/mouse 'dongle' in the other one, without having to use a hub?
This is something I would really love to achieve!
the thing is, the RPi usb ports were only ever designed to work a keyboard and mouse. plugging wifi or bluetooth dongles in was never on the cards.
the RPi usb ports were designed for low power devices ie, 100mA or less... most wifi dongles are going to need more than this. If you issue the command
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sudo lsusb -v |grep MaxPower
it will show how much power the device is requesting to be made available. if you plug in your wifi dongle and it shows it needs more than 100mA then forget it.... It may work initially, but as power requirements alter it will cause problems. My own wifi dongle will work ok for light browsing if I am close to the router, but move away from it, or transfer a large file and it will screw things up. It works a little better on my 4GB sd cards, but my 8GB class10 card wont have any of it.
all this is down to the fact that the "developer release" was hijacked by the great unwashed based on inaccurate media reporting. it should only have been initially sold to developers and people that know what they are doing so that a full public release would have all the tools and instructions ready. what it can and cant do all documented. To many people have been dissapointed with the pi because of what they thought it should be able to do and not about what it CAN do...
Page one of the RPi user guide should say in big red letters that if you want to plug something in other than a mouse or keyboard direct into the RPi then forget it... Use a powered hub.