I experienced this problem as well, with 340.24-0ubuntu1~xedgers14.04.1. Disabling the FXAA setting in nvidia-settings and restarting X worked around it for me.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1307236 Title: NVidia Issues - blurry text after upgrading from 13.10 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1307236/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs