[ubuntu] Arrow keys and Delete not working on keyboad!

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http://ubuntuforums.org – I an running Karmic. Recently my keyboard has started behaving oddly. It does not respond to three arrow keys and the delete key. I also have Win7 installed on another partition. The keys work fine there. I did, Code: xev | grep -A2 --line-buffered '^KeyRelease' | sed -n '/keycode /s/^.*keycode \([0-9]*\).* (.*, \(.*\)).*$/\1 \2/p' And got the following results: Key Pressed: Output on Screen Left arrow: 113 Left Right arrow: 156 XF86Launch1 Up arrow: Nothing is displayed Down arrow: 200 NoSymbol Delete: 200 NoSymbol O (Hardware)