I have the same issue while using Ubuntu 17.10, gnome-control-center 3.26.2
I'm attempting to have my laptop monitor (HP Spectrum 4k monitor) with scale at 200% which works correctly. And then scale my external monitors to 100%. I have two dell 1080p monitors. When I attempt to change my external monitors to 100% the apply button doesn't show. If I change the primary display from the current setting of 200% to 100% the apply button doesn't show. If I then change it back to 200% it does show. My bigger issue is I'm trying to figure out if there is a way to do this through the CLI instead. Everything I see does not have a per monitor granularity. Note: I have currently the following enabled gsettings set org.gnome.mutter experimental-features "['scale-monitor- framebuffer']" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1745440 Title: "Apply" button is missing from Displays To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1745440/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs