This only happens on my new Sony Vaio VPCEH Core i5.... ive installed it to hardrive on the vaio and 3 other laptops its some kind of weird bug with the ACPI power management.

If ive got the charger plugged in it says battery fully charged and if i unplug the charger it stays the same just says battery fully charged.

So basically my backtrack doesnt know the difference between when my laptops running on battery or ac power?

I get no screen dim and cant change the brightness its on full backlight all the time.

Can anyone help ?