Hi all,

I have a Toshiba Laptop with an AMD Athlon II Dual-Core processor. I recently switched to Ubuntu and I have been noticing that whenever the laptop is not plugged in to the power source Ubuntu (very often) ceases to respond and freezes completely. This doesn't happen when I boot windows 7 nor did it happen with the older version of Ubuntu which, although I used for a limited time, never froze.

I was wondering if anyone has the same problem and whether there is a solution to it?