Contents - Raspberry PI Community Projects

can only handle 100mA per USB slot without a hub)). Also, use the latest software.
Forum user MrEngman reported (http://www.raspberrypi.org/forum/absolute-beginners/
using-a-powered-usb-port-to-power-a-rpi#p76485) some keyboard repeats and wireless
hangs until upgrading (http://www.raspberrypi.org/downloads) to the
debian6-19-04-2012 kernel, which he reports stable with no problems even with a low
TP1-TP2 voltage of 4.65 - 4.68 volts.
Keyboard / Mouse interferes with USB WiFi device
Connecting a keyboard and/or mouse while a USB WiFi device is connected, may cause
one or both devices to malfunction. On April 30 2012, there was a bugfix [9] relating to
USB sharing between high-speed (eg. WiFi) and full/low-speed devices (eg. keyboard/
mouse). User spennig [10][11] reports this patch did not fix the Mouse/WiFi conflict. On
2012-05-12, user spennig was pleased to confirm that wifi was working with a USB
keyboard and mouse, as long as the Raspberry Pi had a good PSU and a powered hub.
Even so, some experimentation was needed, e.g. USB WiFi connected to the device, and
the keyboard and mouse connected to the powered hub. Some experimentation may be
necessary to find a working combination; however a good power supply is essential.
Wireless Keyboard trouble
Some wireless keyboards, for example the Microsoft Wireless Keyboard 800 are reported
to fail [12] even though the current drawn by the wireless adaptor is within the R-Pi USB
spec limit of 100 mA. This may be a software driver problem.
Re-mapping the keyboard with Debian Squeeze
If different letters appear on-screen from that which you typed, you need to reconfigure
you keyboard settings. In Debian, from a command line type:
sudo dpkg-reconfigure keyboard-configuration
Follow the prompts. Then restart your RasPi.
Or:
From the command line type:
sudo nano /etc/default/keyboard
Then find where it says
XKBLAYOUT=”gb”