Created attachment 125443 [details]
Kernel LOG

on Gentoo KDE plasma 5 (5.6.5), when system is resumed from RAM suspend, system
can be used until any new window is opened. it can be any application..

After that xorg freezes completely, mouse can be moved, but system does not
react to any keyboard event. ssh remains avail for debugs. This can be repeated
anytime. 

uname -a
Linux stable 4.4.6-gentoo #1 SMP Sun Jul 3 22:09:52 CEST 2016 x86_64 Intel(R)
Core(TM)2 CPU 6700 @ 2.66GHz GenuineIntel GNU/Linux

xorg-server 1.17.4