I'm also experiencing this issue. To test for the issue, I just open a file in vim (I used /etc/courier/imapd), maximize the terminal, then page-down till you hit the end of file (but no extra page downs or it will refresh). Naturally, you can also just use the terminal for 10 minutes and you'll see the issue all over the place.
I can also confirm that this is a problem when using the NVidia proprietary drivers. The issue goes away when you remove the drivers and fall back on Nouveau (As the bugreport Gregory Gleason referred to points out). I find gnome-shell causes audio stutters and lag when using Nouveau, which is why I prefer to use the NVidia drivers. sudo lshw -C video *-display description: VGA compatible controller product: G86 [Quadro NVS 290] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nouveau latency=0 resources: irq:16 memory:fc000000-fcffffff memory:d0000000-dfffffff memory:fa000000-fbffffff ioport:dc80(size=128) memory:fde00000-fde1ffff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/888666 Title: terminal doesn't refresh properly with nvidia-current drivers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/888666/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs