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When I first installed Ubuntu 12.04, I can use the USB mouse and USB stick. My Laptop is dual Boot. When I boot to Windows 7, the USB mouse and stick works properly. But when I boot to Ubuntu, the USB ports are not working. It could not detect the mouse or any device in the USB. Please help.

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insert your USB devices open your terminal and type dmesg and . see the last lines of log . is it showing your USB ? and one more thing check lsusb also . – Jai Jul 1 '12 at 3:13
Welcome to Ask Ubuntu! Please share the content or output of the following commands/files to better help us troubleshoot your problem (instructions in this answer): file(s): /var/log/kern.log, command(s): dmesg, lsusb, sudo lshw – izx Jul 1 '12 at 9:28

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