Adobe Reader：
文档查看器：
答案1
一个已知问题是 Evince 文档查看器不支持子像素渲染。
用 Google 搜索evince subpixel rendering。
说明
Well, actually the problem is not that patches are not good enough,
the problem is that it's not possible to enable subpixel-hinted
rendering without breaking transparencies. For subpixel-hinted
rendering to work we would need to first fill the surface in white and
then call poppler_page_render to render the page, but PDF blend modes
need an initially transparent surface to work. We consider blend modes
more important than subpixel-hinted rendering of fonts.
来源：http://mail.gnome.org/archives/evince-list/2010-October/msg00022.html
有一些补丁可用于启用子像素渲染。即使您不是程序员，也可以应用它们。
无论如何，请订阅错误报告 https://bugs.launchpad.net/poppler/+bug/80921