Ubuntu support on lenovo flex 14
Solution 1:
I just did the same. Bought lenovo flex 14, and installed ubuntu 13.10 alongside the preinstalled windows 8. I now have a dual boot.
I mostly followed the instructions from this thread: Installing Ubuntu Alongside a Pre-Installed Windows with UEFI. I had to make a few modifications though.
The touch screen works fine. I have not faced any trouble so far.
Solution 2:
The touchsreen works well, but not in the same way as in windows. Here are some tips:
https://wiki.ubuntu.com/Multitouch
It works well with Unity, but with Xfce it works as a simple mouse cursor. And it is working very well in Chromium, but not so with Chrome.
Solution 3:
In India, you get a version of this with AMD A6 processor, 4GB RAM and 500 GB disk. I couldn't get Ubuntu 14.04.1 to work satisfactorily on this (everything was detected out of the box, but Compiz used up 100% of CPU all the time). Switched to Mint XFCE edition and I had to do some tweaks to get Wifi to work, display drivers etc - setup documented at http://vsbabu.org/mt/archives/2014/09/16/setting_up_xubuntu_in_lenovo_flex2_14d.html
Solution 4:
I got the version with AMD A8 processor working with the kernel parameter acpi_osi="Linux". Now everything works, acpi, quad core cpu in virtualbox, correct power down.
Solution 5:
For everybody who is considering Ubuntu (15) as OS on the Lenovo flex 2: I highly recommend it. My experience was flawless. It worked out of the box, no bs with drivers as with win 7 and win 10. And I cannot imagine ever going back to Windows again. Ubuntu really is a pleasure to the eye on my HD screen. Touch however, does not work so well but the rest compensates for that enough.