Hello i am experiencing a strange problem under Ubuntu 12.04.

If I unplug the charger while my laptop is on,i don't see any messages but my laptop goes straight into a suspend or hibernate mode and it's a real pain to get it stable again afterwards.

• It always suspends (or hibernates)
• It always takes 2 attempts to restart it (press power button, it starts and it hibernates again, press power button and it starts and stays on)
• It sometimes has an effect on the wireless which doesn't come back clean and i either have to switch the wireless on and off a couple of times.
• I sometimes have to restart the laptop totally

Is anyone else experiencing the same issues and if yes,is there any solution?

Thank you in advance.