A cause of the problem appears to be that the upgrade process related in this line in the xorg.conf file:
Virtual 1920 1440 Commenting this out resulted in fonts which are close to normal, and xdpyinfo now reports a resolution of 101x101 dots per inch. I don't know enough about xorg configuration to know where the fault lies. -- dpi setting incorrect https://bugs.launchpad.net/bugs/139700 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs