I noticed this https://bugs.launchpad.net/linux/+bug/36583 There seems to be a known issue with the BIOS. Asus has updated the BIOS for your machine since this post stating the problem is fixed. I would be extremely cautious with updating your BIOS. Make that your last possible resort.

I am sure some smart person will chime in with the real solution so do some more research first.

If you do decide to flash the BIOS do it from inside the BIOS with the laptop plugged in to AC. Never use Asus Update Utility to flash your BIOS from windows. Even Asus reps say it will bork your system.

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