a newbie here.
I'm using a dell 4k display on ubuntu 14.04(up-to-date so far).
I have already followed the instructions on this link - Adapt Ubuntu to a high-DPI resolution screen - it struck me with some awesome hidpi display thanks to all the work put into.
One thing that doesn't work properly though, is the mouse cursor scaling. The scaling seems to work properly 'inside application border' but when I move the pointer outside the border (of that application), i.e., entering to the desktop background (plain background without any windows) the cursor gets rescaled to its original size (half the size in my case). The same thing happens when the cursor moves into any application's titlebar area.
It doesn't seems to find a fix for it easily (or blame my poor googling skill) I could use some of your helps here. Thanks.