i usually work on my Acer M5-481TG with Windows 8 x64 and recently installed Ubuntu 12.10 (x64) alongside with it. Unfortunately, the battery-life is roughly one and a half hour - which apparently is disasterous, compared to the 5-6 hrs it runs under Windows. The whole laptop gets quite hot and the fans keep running like crazy all the time.
I though it might be the GT64M graphics card that causes this, but after checking the switcheroo-logs, the integrated solution is active (as intended).
root@nubuntu:~# cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1: DIS: :Pwr:0000:01:00.0
I've no clue what might be causing this. Besides: Neither the touchpad, nor the display-brightness-keys work properly.