here is what I know for Padfone series, there is a likely know factor Asus working with Ubuntu. But there is also a 95% likely chance they will NOT make it available to Padfone 1 / 2 / Infinity. Meaning they will make a new Version Padfone for Ubuntu Touch OS. In Asus Mind, their thinking are similar to Apple thinking, they only will continue to upgrade their latest Flagship. The prior generation will be update later. If you want the latest OS, buy the newest Device!!
contracted, as for rep NO. All rep for Asus dont know anything, only reading the guide/book given to them.
the only way to Root Asus phone with out breaking warranty, especially Padfone series, you will need their Developer plug-in console for the phone.
This plug-in are hardware coded plus Personal Identification coded plus Cellular number coded per device. With out all 3 components, rooting with out unlocking bootloader is impossible.
do not bother about Rooting, Asus will Force Bootloader Unlock for Infinity to Root, meaning same policy applies Loosing Warranty.
the Rooting option for PF2 will not work for Infinity. Bugs and quirks on PF2 had been cleaned out, will not happen again on PFI.
Plus we do not have any plans to release the Rooting function for Infinity until Asus approves it for Bootloader Unlock.
@Chaz, as a guinea pig, you are taking a Huge Risk of Permanent Bricking your Phone and Loosing Warranty. Are you Up/ready for it?
once your phone is Bricked, due to Rooting the device, you will forfeit your warranty.
asus will ignore your call or service for support, unless you are willing to PAY for Motherboard replacement as your own cost + round trip shipping.
even if you did replace MOBO, the warranty are still null, they will only replace a MOBO with unlocked bootloader since 2012 December.
Once you unlock, your device is FULLY non-warrant any longer. MOBO cost around 75% of original purchase of the phone.
you battery drain for smart phone is purely normal, your DATA was on the whole time plus GPS. Of course your battery drain like running faucet. No matter what size the battery came with, people will always complain NOT ENOUGH JUICE. Since the Screen are nearly on 80% + data/wifi. Always bring an External Battery for charging.