{"id":2375,"date":"2026-04-27T14:43:51","date_gmt":"2026-04-27T14:43:51","guid":{"rendered":"https:\/\/hackmybox.com\/?p=2375"},"modified":"2026-04-29T06:41:32","modified_gmt":"2026-04-29T06:41:32","slug":"proxmoxgpupassthrough","status":"publish","type":"post","link":"https:\/\/hackmybox.com\/index.php\/2026\/04\/27\/proxmoxgpupassthrough\/","title":{"rendered":"Proxmox GPU Passthrough"},"content":{"rendered":"
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PCI passthrough allows a VM to directly control a physical device (GPU, NIC, etc.).<\/p><\/div><\/div>

1. Requirements (non-negotiable)<\/h2>\n
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  • CPU with IOMMU:\n
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    • Intel \u2192 VT-d<\/li>\n
    • AMD \u2192 AMD-Vi<\/li>\n<\/ul>\n<\/li>\n
    • BIOS:\n
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      • Enable VT-d \/ IOMMU<\/strong><\/li>\n
      • Enable Above 4G Decoding<\/strong> (important for GPUs)<\/li>\n<\/ul>\n<\/li>\n
      • GPU:\n
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        • Dedicated GPU for VM (don\u2019t use host GPU unless you know what you're doing)<\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div><\/div>

          2. Enable IOMMU (Host)<\/h2>\n

          Edit GRUB:<\/p>\n

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          sudo<\/span> nano \/etc\/default\/grub<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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          Intel:<\/h3>\n
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          GRUB_CMDLINE_LINUX_DEFAULT<\/span>=<\/span>\"quiet intel_iommu=on iommu=pt\"<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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          AMD:<\/h3>\n
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          GRUB_CMDLINE_LINUX_DEFAULT<\/span>=<\/span>\"quiet amd_iommu=on iommu=pt\"<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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          Update:<\/p>\n

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          sudo<\/span> update-grub<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div>
          \"\"<\/div><\/div>