I have traced this to an Ubuntu patch: debian/display-scaling-default- value
The comment says: "Set default scaling to be 1:1, instead of using the hardware's reporting to define scaling by default. This is because hardware lies. Lots of it does." Unfortunately the solution, as far as I can tell, only works for Unity. Also, the use of com/ubuntu/user-interface/scale-factor poses the question: how does Unity get the right answer, and why is it worth trusting? Is it user-set? If it is user-set (which would explain why I couldn't find an automatic setting anywhere in the Unity code!), then it would be reasonable to look up non-Unity user settings too, such as GNOME's HiDPI "Window scaling" setting /org/gnome/desktop/interface/scaling-factor. In general, the relevant setting should be read depending on the desktop (sigh, sounds like another need for an xdg-util, e.g. a new setting for xdg-settings). An alternative would be to patch GNOME's control center to set the same property; then at least the code would also work for GNOME. Ubuntu's setting is clearly superior to GNOME's in that it is per-screen (or to be precise, per display adaptor), not a single number. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1606959 Title: DPI setting is not correctly calculated on Ubuntu GNOME To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1606959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
