[closed]PCIE TV card passthrough - how?


Active Member
May 14, 2019
Proxmox 8.0.3
Trying to passthrough a PCIE TV decoder
done all the modules stuff

lspci -nnk
01:00.0 Multimedia video controller [0400]: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb [14f1:8880] (rev 04)

lspci -n -s 01:00.0
01:00.0 0400: 14f1:8880 (rev 04)

find /sys/kernel/iommu_groups/ -type l |sort

using GUI
VM | hardware | add | pci device
Mapped device is empty (as expected)

If I add Raw device 0000:01:00.0 Conexant Systems IOMMU 23
the VM will not start with error 'Unable to read tail (got 0 bytes)'

qm set VMID -hostpci0 01:00.0
PCIE device is NOT passed through

yes - its on its own IOMMU group (23)

Any ideas please?
Last edited:


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