Comment 4 for bug 1456881

We found under some extreme system usage that comment #2 can fix the problem.

Run some application/operation (e.g: Play youtube on background, launch libreoffice for awhile (about 5-10min) or insert USB to copy some files : The touchpad cursor were no function after some operation, sometime it scrolling automatically or keep send press signal.

Without the patch of comment #2, when the issue occurred we also check the touchpad event on ttyl1 by "evtest", we can found the event keeping output without move cursor/click touchpad.

Our observation is the HiDPI platform may have more loading cause this issue and sometimes its also cause xorg crash.