xcalib error -> unsupported ramp size -> Missing letters in menus and folder names

When issuing xcalib commands I was getting the error Error - unsupported ramp size 0. I was able to fix this by creating the following file /etc/X11/xorg.conf.d/20-intel.conf and placing this text inside the file

Section "Device"
  Identifier "Intel Graphics"
  Driver "intel"
EndSection

This created a new issue, Nautilus omits random letters when displaying filenames, directories, menu entries, etc (see below). This is solved by adding a line Option "AccelMethod" "uxa" to my 20-intel.conf which unfortunately slows everything down, considerably.

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "AccelMethod"  "uxa"
EndSection

What's going on and what's the best way to fix it?