performance: 0.984 graphic: 0.947 architecture: 0.844 device: 0.756 x86: 0.706 boot: 0.655 peripherals: 0.641 semantic: 0.581 permissions: 0.496 register: 0.487 mistranslation: 0.479 debug: 0.440 socket: 0.418 PID: 0.398 user-level: 0.347 kernel: 0.334 risc-v: 0.322 VMM: 0.296 vnc: 0.275 ppc: 0.274 virtual: 0.254 hypervisor: 0.248 arm: 0.240 assembly: 0.238 TCG: 0.228 files: 0.194 KVM: 0.181 i386: 0.144 network: 0.144 Regression: 8.1.3 -> 8.2.0 breaks virtio vga driver Description of problem: I have a number of emulated arch linuxes using the same x11/kde configuration. After updating from 8.1.3 to 8.2.0, they all broke in the following way: - screen tearing/artifacts seen from bios up until sddm - sddm is possibly affected - kde/x11 has so many artifacts that its unusable. if i attempt to write in a console window, i can only see parts of what ive written if i attempt to gently resize the bottom of the window. clicking the menu item will only render the menu 1/6 times and only partly. however if I click where I remember the shutdown button to be, the system shuts down immediately, so thi seems to be purely a graphics issue. - starting with -vga qxl fixes all issues. Steps to reproduce: 1. make new qemu, install arch/kde 2. boot said qemu with -vga virtio option 3. observe issue from the moment it boots Additional information: Using nVidia card and drivers on host. Removing x86-video-vesa on the guest system seemed to significant improve performance. There are still many artifacts but its almost usable with this driver removed.