I’m currently using Debian Stretch (9.1) on my Laptop (HP ProBook 640 G1 with Intel HD 4600) and Cinnamon 3.2 as desktop environment. While trying to get the best results for font rendering, my first attempt was the little script found here, which was quite useful.
However, the usage of the package fontconfig-infinality yields much better results. My problem with this package is now that it has awful consequences for Mozilla programs like Firefox or Thunderbird as shown in the picture:
Any ideas how to get a proper font rendering for Firefox and Thunderbrid while using Infinality?
