Fixing GNOME 3 freezes on SandyBridge and later Intel graphics

I had this problem in Korora/Fedora 19 and the fix appears to be enabling SNA (Sandybridge’s New Acceleration) acceleration for the card instead of the older UXA (Unified Acceleration Architecture).

It’s simple to do, just add the following contents to /etc/X11/xorg.conf.d/10-intel.conf file then restart X or reboot.
Section "Device"
  Identifier "Intel Graphics"
  Driver "intel"
  Option "AccelMethod" "sna"

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