[ubuntu] Mouse and keyboard dosentwork at loginscreen

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http://ubuntuforums.org – Hi, I just installed ubuntu 11.10 alongside with windows 7, I have the both operativesystems on two different partitions. But when I start up ubuntu my ordinary mouse and keyboard doesnt work, it's a razer naga mouse and a Microsoft sidewinder keyboard. If I unplug those and plugin an old mouse and keyboard I can log in to then unplug those and use my primary instead. I don't want it like that since the extra old mouse is also used for the family pc and is often used so I can't restart unless the mouse is free to use. What can I do to fix this? I am totally new to ubuntu (Hardware)