I have similar gpu passthrough problems with one of my Windows 10 VM after upgrading from 6.9.2 to 6.10   VM 1: not running anymore BIOS: SeaBIOS Chipset: i440fx-4-1 vdisk1: SATA vdisk2: VirtIO Graphics: Nvidia 1050TI passthrough BIOS-ROM: yes Sound: Nvidia 1050TI Network: br0.5, virtio-net VM 2: still running fine BIOS: OVMF Chipset: i440fx-4-1 vdisk1: VirtIO Graphics: Nvidia 1050TI passthr