Created attachment 1336784 [details] Eclipse screenshot with large icons Description of problem: When running Eclipse on Wayland on a HiDPI display, icons in title bars and menus get super sized which causes very little space to be available for other things. This also happens in any drop down lists with icons in them, causing them not to fit on the display. What seems to happen is that instead of the icons getting double scaled, they are getting scaled up twice to a 4x scaling. This does not happen when running the same version of Eclipse on X11, it also does not happen with any other applications on Wayland Version-Release number of selected component (if applicable): eclipse-platform-4.7.1-6.fc27.x86_64 gtk3-3.22.24-1.fc27.x86_64 xorg-x11-server-Xwayland-1.19.3-8.fc27.x86_64 How reproducible: every time Steps to Reproduce: 1. HiDPI / UHD / 4K display 2. Wayland 3. start eclipse Actual results: Huge icons Expected results: icons scaled to 2x Additional info: If before starting Eclipse, I change the gnome display settings to 100x instead of the 200x scaling and then start Eclipse the icons are sized properly compared to the rest of the elements. Only issue is that everything is then very small and hard to read. If I change the setting while Eclipse is running I get strange results.
Created attachment 1336785 [details] Eclipse menu drop down
Found the issue is already reported upstream. They have a workaround, which is to start Eclipse from a command line using GTK2 as follows: $ eclipse --launcher.GTK_version 2 But when I do that, all I get is the Eclipse splash screen and it does not continue.
(In reply to Robert de Rooy from comment #2) > Found the issue is already reported upstream. > > They have a workaround, which is to start Eclipse from a command line using > GTK2 as follows: > $ eclipse --launcher.GTK_version 2 > > But when I do that, all I get is the Eclipse splash screen and it does not > continue. That's right, unfortunately due to man-power we can no longer support the GTK2 back-end.
An alternative workaround might be to force Eclipse to run on X11 until this is fixed upstream. Does invoking Eclipse like this help? $ GDK_BACKEND=x11 eclipse
Yes it helps. The main Eclipse UI is usable that way on Wayland. However there are still some strange things, mainly in settings dialogs where the font is sometimes very small
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