[kubuntu] Wireless mouse freezes after a couple seconds, comes back once reconnected

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http://ubuntuforums.org – My wireless mouse (logitech M310, but also another wireless mouse) freezes after a couple seconds of use. But the track pad on the laptop (Lenovo ThinkPad T420s) continues to work. Moving the mouse or clicking does not wake the thing up. Removing the little usb wireless "nano receiver" and plugging it back into the usb port brings the mouse back, but only for a few seconds. Running kubuntu 12.04, but this also happened on 11.10. Continues to happen with xfce, so it might not be a kde thing. It doesn't matter if I'm plugged in, or on batter power. And I don't see anything new in (Hardware)