LondonPi wrote:Hi there,
I'm new to the Pi, just go it this week and am from a mostly-Windows background. I have the Edimax wireless adapter listed in the dropbox and I am trying to follow the script you provided.
I once ran the setup without the adapter in and it ran successfully. I input all the SSID/password etc.
Now when I start up the Pi without the adapter it warns me that "wlan0 is not connected". I take this as a good sign that the script ran properly and it's searching for the unplugged adapter.
However when I reran the script and it prompts me to plug in the wifi adapter I plug it in and my keyboard cuts out, so I can't "press any key to continue".
I am using a Microsoft Curve 2000 keyboard, rated 5V 100mA on the back. I've not really had problems with it the rest of the time with my Pi. If those numbers sound too high please tell me and I'll try to borrow a lower power keyboard.
I'm using a nearly fresh SD card with Raspbian on it (downloaded 15-07-2012). The only additions are the 2 licence keys for MPEG and WVC-1 and installing xterm.
If I turn it on with the adapter plugged in the keyboard is unresponsive (though the startup screen indicates its detected it, I see its name flash past) but periodically the green light on the adapter rlashes and the CPU monitor indicates some usage, so I expect it's doing something but with no keyboard I can't really find out what.
If I then unplug the adapter, my CPU usage jumps to 20% permanantly but the keyboard (even un/replugged) remains unresponsive until I reboot the Pi.
(Sorry if this is longwinded, I'm just trying to flesh out the problem and what I've tried)
Sounds like you need a new power supply not a different keyboard. Or you may get it working by plugging the wifi adapter into a powered hub. There's plenty of discussions about suitable power units throughout the forum and the wiki. And also using hubs for the wifi adapters. Although not always necessary if you have a high quality power supply, not a phone charger or equivalent.
Even though the keyboard label says 5v 100mA I'd expect it to take a fair bit less. This is a standard USB power spec in which the max current is stated in units of 100mA, e.g. 100mA, 200mA, 300mA etc, and is not the actual max current. Mine indicates the same but uses less than 3mA with no LEDs on and less than 27mA with all 3 LEDs on. The wifi adapter, however, will take quite a bit more than 100mA when active especially when transmitting.
So you ran the script and ignored the instructions to plug in the wifi adapter. OK, that's up to you, but don't expect it to work when you've fixed your power issues.
When you re-run the script please follow the instructions although I cannot say if it will work since you didn't the first time. It should ask if you want to upgrade or add a new adapter. Select upgrade. If it does you may be OK and it may set things up alright. If it doesn't then the setup's likely broken and you may need to fix files by editing by hand as it were, rather than via the script.
Simplicity is a prerequisite for reliability. Edsger W. Dijkstra
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