By looking at your screenshots it does not seem like a font rendering problem. It is actually a theming issue.
** Package changed: gtk+3.0 (Ubuntu) => ubuntu ** Changed in: ubuntu Importance: Undecided => Medium ** Changed in: ubuntu Status: New => Triaged ** Package changed: ubuntu => ubuntu-themes (Ubuntu) ** Also affects: ubuntu-themes Importance: Undecided Status: New ** Summary changed: - Blurred fonts in GtkPopover under Unity + Inherited shadows in GtkPopover text cause readability problems -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1347321 Title: Inherited shadows in GtkPopover text cause readability problems Status in Themes for Ubuntu: New Status in “ubuntu-themes” package in Ubuntu: Triaged Bug description: I'm currently developing an application which uses GtkPopovers. It works fine under GNOME Shell on Utopic 14.10 but under Unity text inside the popover is blurry. I will attach screenshots indicating what I'm talking about. Oddly, the text inside a GtkButton displays fine. It's the text labels elsewhere (GtkLabels, combo boxes, etc.) that are blurred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-themes/+bug/1347321/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp