Liux kernel 3.19 which is newly released is interesting because of the built-in touch screen drivers. There are many low-cost x86-based tablets with Windows 8.1 pre-installed out there. IMO by wiping out Windows and installing Ubuntu Linux you could get a lasting hardware/software out of these tablets.
The problem is there are no Linux distributions containing kernel 3.19 at the moment. However Canonical ltd will release Ubuntu Linux later this spring (2015). So, Ubuntu 15.04 will use kernel 3.19 but is it already available on the latest Ubuntu 15.04 beta 1? I dunno! Have to give it a try!
Of course it's possible to make touch screen of a Windows tablet work by compiling drivers and loading modules by the kernel. I think that is way too complicated. I want to install Ubuntu Linux on an x86-tablet the easy way. Drivers which are inside kernel make life easier.
Will it work in the end of the day? We'll see!
Download Ubuntu 15.04 beta 1
Install kernel 3.19 on Ubuntu