Segmentation fault in XServer
Solution 1:
I managed to solve my issue by using workaround described here:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1510970
to disable SNA.
I created /usr/share/X11/xorg.conf.d/20-intel.conf file with the following content:
Section "Device"
Identifier "Card0"
Driver "Intel"
Option "AccelMethod" "uxa"
EndSection