Sub-pixel antialiasing not working

Question

linux

Sub-pixel RGB anti-aliasing stopped working after a clean install of Gentoo while keeping the old /home partition. There are only gray tones.
Tried various combinations of options in the Gnome2 graphical settings utility (System - Options - Appearance - Font).
Here are my fontconfig options:

# eselect fontconfig list | grep "*"
Available fontconfig .conf files (* is enabled):
  [4]   10-sub-pixel-rgb.conf *
  [9]   20-unhint-small-dejavu-sans.conf *
  [10]  20-unhint-small-dejavu-sans-mono.conf *
  [11]  20-unhint-small-dejavu-serif.conf *
  [13]  25-unhint-nonlatin.conf *
  [14]  30-metric-aliases.conf *
  [15]  30-urw-aliases.conf *
  [16]  40-nonlatin.conf *
  [17]  45-latin.conf *
  [18]  49-sansserif.conf *
  [19]  50-user.conf *
  [21]  52-infinality.conf *
  [22]  57-dejavu-sans.conf *
  [23]  57-dejavu-sans-mono.conf *
  [24]  57-dejavu-serif.conf *
  [28]  60-latin.conf *
  [35]  65-fonts-persian.conf *
  [37]  65-nonlatin.conf *
  [38]  69-unifont.conf *
  [41]  80-delicious.conf *
  [42]  90-synthetic.conf *

Recompiled freetype with USE="infinality", doesn't help either.
What could I have forgotten?

Answer 1

Look at the USE flags, there might be something about bytecode or something.