Updated Proxmox VE yesterday, N100 PC with GPU passthrough starts but Debian VM doesn't start anymore.
TASK ERROR: start failed: command '/usr/bin/kvm -id 101 -name 'Debian-WZPC-VGA,debug-threads=on' -no-shutdown -chardev 'socket,id=qmp,path=/var/run/qemu-server/101.qmp,server=on,wait=off' -mon 'chardev=qmp,mode=control' -chardev 'socket,id=qmp-event,path=/var/run/qmeventd.sock,reconnect-ms=5000' -mon 'chardev=qmp-event,mode=control' -pidfile /var/run/qemu-server/101.pid -daemonize -smbios 'type=1,uuid=e0bc4a03-4a1f-49f4-9124-fb07194c63b7' -object '{"id":"throttle-drive-efidisk0","limits":{},"qom-type":"throttle-group"}' -blockdev '{"driver":"raw","file":{"driver":"file","filename":"/usr/share/pve-edk2-firmware//OVMF_CODE_4M.secboot.fd"},"node-name":"pflash0","read-only":true}' -blockdev '{"detect-zeroes":"on","discard":"ignore","driver":"throttle","file":{"cache":{"direct":false,"no-flush":false},"detect-zeroes":"on","discard":"ignore","driver":"raw","file":{"aio":"io_uring","cache":{"direct":false,"no-flush":false},"detect-zeroes":"on","discard":"ignore","driver":"host_device","filename":"/dev/pve/vm-101-disk-0","node-name":"e87a2aa6652ea62bd93951c12e78daa","read-only":false},"node-name":"f87a2aa6652ea62bd93951c12e78daa","read-only":false,"size":540672},"node-name":"drive-efidisk0","read-only":false,"throttle-group":"throttle-drive-efidisk0"}' -smp '4,sockets=1,cores=4,maxcpus=4' -nodefaults -boot 'menu=on,strict=on,reboot-timeout=1000,splash=/usr/share/qemu-server/bootsplash.jpg' -vga none -nographic -cpu 'host,kvm=off,+kvm_pv_eoi,+kvm_pv_unhalt' -m 13700 -object 'iothread,id=iothread-virtioscsi0' -object '{"id":"throttle-drive-scsi0","limits":{},"qom-type":"throttle-group"}' -global 'ICH9-LPC.disable_s3=1' -global 'ICH9-LPC.disable_s4=1' -readconfig /usr/share/qemu-server/pve-q35-4.0.cfg -device 'vmgenid,guid=4eeb9889-b48c-49da-a4fa-1c4815ff590a' -device 'qemu-xhci,p2=15,p3=15,id=xhci,bus=pci.1,addr=0x1b' -device 'usb-tablet,id=tablet,bus=ehci.0,port=1' -device 'vfio-pci,host=0000:00:02.0,id=hostpci0,bus=ich9-pcie-port-1,addr=0x0' -device 'vfio-pci,host=0000:00:1f.0,id=hostpci1.0,bus=ich9-pcie-port-2,addr=0x0.0,multifunction=on' -device 'vfio-pci,host=0000:00:1f.3,id=hostpci1.1,bus=ich9-pcie-port-2,addr=0x0.1' -device 'vfio-pci,host=0000:00:1f.4,id=hostpci1.2,bus=ich9-pcie-port-2,addr=0x0.2' -device 'vfio-pci,host=0000:00:1f.5,id=hostpci1.3,bus=ich9-pcie-port-2,addr=0x0.3' -device 'usb-host,bus=xhci.0,port=1,vendorid=0x046d,productid=0xc52b,id=usb0' -device 'usb-host,bus=xhci.0,port=2,vendorid=0x0bda,productid=0xb85b,id=usb1' -device 'usb-host,bus=xhci.0,port=3,vendorid=0x0573,productid=0x1573,id=usb2' -device 'usb-host,bus=xhci.0,port=4,hostbus=2,hostport=1,id=usb3' -device 'usb-host,bus=xhci.0,port=5,hostbus=2,hostport=2,id=usb4' -device 'usb-host,bus=xhci.0,port=6,vendorid=0x0951,productid=0x1666,id=usb5' -device 'usb-host,bus=xhci.0,port=7,hostbus=1,hostport=2,id=usb6' -chardev 'socket,path=/var/run/qemu-server/101.qga,server=on,wait=off,id=qga0' -device 'virtio-serial,id=qga0,bus=pci.0,addr=0x8' -device 'virtserialport,chardev=qga0,name=org.qemu.guest_agent.0' -iscsi 'initiator-name=iqn.1993-08.org.debian:01:4b8f59e19341' -device 'ide-cd,bus=ide.1,unit=0,id=ide2,bootindex=100' -device 'virtio-scsi-pci,id=virtioscsi0,bus=pci.3,addr=0x1,iothread=iothread-virtioscsi0' -blockdev '{"detect-zeroes":"unmap","discard":"unmap","driver":"throttle","file":{"cache":{"direct":true,"no-flush":false},"detect-zeroes":"unmap","discard":"unmap","driver":"raw","file":{"aio":"io_uring","cache":{"direct":true,"no-flush":false},"detect-zeroes":"unmap","discard":"unmap","driver":"host_device","filename":"/dev/pve/vm-101-disk-1","node-name":"ecc3349bc3205b243b6648d93195561","read-only":false},"node-name":"fcc3349bc3205b243b6648d93195561","read-only":false},"node-name":"drive-scsi0","read-only":false,"throttle-group":"throttle-drive-scsi0"}' -device 'scsi-hd,bus=virtioscsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0,id=scsi0,device_id=drive-scsi0,rotation_rate=1,bootindex=101,write-cache=on' -netdev 'type=tap,id=net0,ifname=tap101i0,script=/usr/libexec/qemu-server/pve-bridge,downscript=/usr/libexec/qemu-server/pve-bridgedown,vhost=on' -device 'virtio-net-pci,mac=BC:24:11:C5:8A:EB,netdev=net0,bus=pci.0,addr=0x12,id=net0,rx_queue_size=1024,tx_queue_size=256,bootindex=102,host_mtu=1500' -machine 'pflash0=pflash0,pflash1=drive-efidisk0,hpet=off,type=q35+pve0'' failed: got timeout
/etc/default/grub
GRUB_DEFAULT=0
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=`( . /etc/os-release && echo ${NAME} )`
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction initcall_blacklist=sysfb_init video=simplefb
ff video=vesafb
ff video=efifb
ff video=vesa
ff disable_vga=1 vfio_iommu_type1.allow_unsafe_interrupts=1 kvm.ignore_msrs=1 modprobe.blacklist=radeon,nouveau,nvidia,nvidiafb,nvidia-gpu,snd_hda_intel,snd_hda_codec_hdmi,i915,btusb pcie_aspm=force nvme_core.default_ps_max_latency_us=5500"
GRUB_CMDLINE_LINUX=""
....
With Kernel 6.xxx it runs perfectly. Rolled back.
