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id summary reporter owner description type status component version resolution keywords cc guest host 15765 [Linux] [KDE5] Windows Guest scales incorrectly on High DPI host with Guest Additions JonasDeMoor "Hello, I have a Dell XPS 15 9530 with a high DPI (3200x1800) screen. I'm running Arch Linux with KDE Plasma 5, which has support for high resolution displays. With the migration of VirtualBox to QT 5, the GUI scales very well and is a pleasure to use on my high DPI screen. Except for one problem: when I install the VirtualBox Guest Additions on a Windows 8.1 or 10 host, the VM only fills up a quarter of the screen; the rest is black. The strange thing is that this only happens when the Guest Additions are installed on the Windows Guest. Without them, it runs fine. Input is also registered wrong: I have to move in the ""black area"" in order to be able to click on something on the Windows desktop. Another strange thing is that when pausing the VM, VirtualBox scales the VM perfectly fine, but when resuming, it's gone. I attached screenshots to make things a little bit more clear, together with the VBox.log file from a Windows 8.1 guest." defect new other VirtualBox 5.1.2 Linux, Windows Guest Additions, Windows, KDE, Plasma, High DPI Windows Linux

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