Hi, Running Ubuntu Gnome 16.10 Yakkety with Wayland.
I have a "Mixed DPI" setup with two monitors, one of which is high resolution and requires DPI scaling set to 2, the other one has a normal resolution and doesn't require DPI scaling. To be clear, this is a Macbook Pro with Retina display, where the laptop's screen is high resolution, but it's connected to a 2560x1080 external monitor which doesn't require DPI scaling. macOS handles this well, setting the DPI scaling automatically for each monitor, and applications also adapt seamlessly when moved from one to the other. X never had any notions of a mixed DPI scaling so under X, I really could only use one or the other monitor. Gnome 3 with Wayland comes close to properly handling it, but it does suffer from some rather strange rendering problems: 1) Menus in some GTK applications (including some default Gnome applications) open at incorrect place. So if I click on the "File" or "Edit", the menu doesn't show up where it should, instead it shows up half way down the screen. Notice for example in this screenshot where the "File" menu of Evolution opens. Screenshot 1: http://imgur.com/a/HiwAN This problem is also present with the right-click menu in these applications. 2) Some other applications, such as Firefox, do not have the above issue but instead suffer from other issues, namely: a) The mouse cursor is huge while it hovers over the application's window. It goes back to its normal size when the mouse goes outside that window. In these two screenshots, compare the size of the mouse when it's inside Firefox's window to when it's outside it Screenshot 2: http://imgur.com/a/DBnWL Screenshot 3: http://imgur.com/a/12ycW b) The same applications have a huge title bar. The title bar both takes up a lot of vertical space, as well as uses too big a font. Refer to the previous two screenshots to compare Firefox's title bar with that of Gnome Terminal for example. 3) Some other applications do not follow the correct DPI scaling at all. For example in this screenshot, compare GIMP with Epiphany (the latter adjusts DPI scaling correctly) Screenshot 4: http://imgur.com/a/f4Jn5 This problem exists amongst many other applications such as Chromium, as well as qt-based applications. Are these issues known? I tried looking up but my google-fu might have failed me. If these bugs are not known, I'd be happy to file bug reports but the problem is I don't know where the problem lies and who the appropriate upstream is. Is it an issue with Wayland? Gnome? Ubuntu? The GTK and Qt toolkits? Cheers -- Aryan Ameri -- Ubuntu-GNOME mailing list Ubuntu-GNOME@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-gnome
