Note: If you're using an older version of kvm/qemu the you might need to use the '-std-vga' flag instead. qemu-system-sparc64 -drive filehd.qcow2,ifnone,idhd -device virtio-blk-pci,buspciB,drivehd,bootindex0 Changes to sun4u machine from 2.11 onwards In order to improve the compatibility of QEMUs sun4u machine, there have been a number of changes that have been made during the 2.11 development cycle which in some cases will require. By abstracting the hardware the vm images are capable of doing this.īy using the '-vga std' flag you make the GuestOS load a standard VGA device that should be able to support resolution equal-to-or-greater than your physical card can handle.
Hardware virtualization is necessary because virtual disk images are often copied to many different systems with diverse architectures. This screenshot shows how my guest could go up to 4k:Īdd the '-vga std' flag to the command lineīasically, the virtual machine loads its own virtual driver. Command i used for linux mint(open source host driver) qemu-system-x8664 -cpu host -smp 6 -drive filediskimages/linuxmint1 -enable-kvm -m 8G -vga virtio. But if you select a huge guest resolution with a tiny host window, that will of course be useless (QEMU will have to sample multiple pixels into one), so generally you just want to let QEMU automatically scale for you. But it also works if you go into the guest Ubuntu resolution settings. When virtio-vga was added, the intention was.
QEMU VIRTIO VGA PATCH
How I guessed it: virtio in general means: simulate a generic convenient VM machine without normal hardware restrictions.Īs explained there, QEMU has a feature which automatically updates the resolution as you increase the host window size e.g. Qemu-devel PATCH virtio-vga: only enable for specific boards Export this patch. Then you can toggle fullscreen with Ctrl + Alt + F, or by passing -full-screen. Of course, this is useless since my display only goes up to 1080p, so I set 1080p.
Using this option allows me to go all the way up to 4096 x 2160. Alexey Shabalin <> 5.2.0-alt1 - 5.2.0 (Fixes: CVE-2020-14364) - Drop ivshmem-tools package - Drop lm32 and unicore32 arches - Add new packages: + qemu-audio-spice + qemu-char-spice + qemu-display-virtio-gpu-pci + qemu-display-virtio-vga + qemu-display-virtio-gpu + qemu-ui-spice-core + qemu-ui-opengl + qemu-ui-egl.QEMU VIRTIO VGA WINDOWS 7
I was able to get higher resolutions on a Windows 7 guest by changing the video card from vga to vmvga in the virtual machine's settings window. I use virt-manager (as I'm a complete noob to kvm and libvirt).
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