I bought the 14 inch one (I think code is NP530U4B), kernel 3.2.0-29, ubuntu 12.04, x64
In general it works ok but I am very concerned with the battery issue.
I have changed the kernel options according to the previous posts:
However, I have not noticed any improvement.
linux /vmlinuz-3.2.0-29-generic root=UUID=1e849ec5-41a6-4d79-b100-fba9b45b6351 ro pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_en
The computer is hot, the fan is very active.
$ upower -i /org/freedesktop/UPower/devices/battery_BAT1 | grep rate
energy-rate: 33.8106 W
- When I (dis)connect the power cord, there is no change in the battery icon. Now I am working with the battery but the icon is power, and when I click it says "35 min. to charge!".
- I cannot change the bright of the screen. It is at the max. The fn-F2 show the icon but do not decrease. In Brightness settings I can move the slider but no effect.
Thank you for any help! I am very worried with the battery life at current state.