I have the xrandr scaling bug described in: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/883319
(In short: I have a HiDPI laptop + an external monitor. When connected, the external monitor has blurry display due to having a different DPI from my laptop's internal display. I wanted to fix the issue using the xrandr --scale 2x2 command. However, there is an aforementioned bug that constraints the mouse movement on the external display to a quarter of the screen.)
From the bug thread it is apparent that there is a patch for this problem created by Chris Wilson: (https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/883319/+attachment/4399679/+files/randr_scaling_ubuntu1504.patch)
However, as I am a UNIX newbie it is not completely apparent to me how the patch should be installed so xrandr scaling works correctly again. Can anyone please post a more elaborate description of how to fix xserver using the above mentioned patch?
I am running Ubuntu-Gnome 14.04 LTS