I think I have the same bug with Ubuntu 16.10. 16.04 was fine. Additionally, setting a new wallpaper is a bit slow. The new wallpaper appears after a delay of 2 seconds without any special effect (no fading in/out).
Graphics card : Intel HD graphics. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1634220 Title: Wallpaper does not resize correctly when adding external display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1634220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs