Well, then something isn't right here. "Zoom to Fit" disabled: qemu starts with a small window (1:1 scale) and resizes the window when the xserver/window manager starts (1:1 scale). This is the sane and wanted behavior.
"Zoom to Fit" enabled: qemu starts with a small window and doesn't resizes the window when the xserver/window manager starts. The whole display is squeezed into the small window. The window simply ignores resolution changes of the guest. So either there is sth wrong with your statement: "Therefore it is not needed to auto-resize the window" or with my setup (my window manager is dwm, the linux guest uses modesetting as video driver). -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1788701 Title: "Zoom to fit" doesn't work with -display gtk -vga virtio Status in QEMU: New Bug description: qemu version: 2.12.1, 3.0.0 When using -display gtk for all -vga options (std,qxl,vmware,cirrus) the option "Zoom To Fit" is unchecked by default and thus auto- resizing of the window works well; except for -vga virtio: here "Zoom To Fit" is checked and auto-resizing doesn't work. Proposal: make "Zoom To Fit" unchecked by default for virtio as well Extended proposal: make GTK window options configurable via parameters To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1788701/+subscriptions