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Merge pull request #7 from outis1one/claude/bios-vt-power-settings-mxjh0x

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Claude/bios vt power settings mxjh0x
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Outis
2026-06-26 23:40:12 -04:00
committed by GitHub
parent 1235d1c514 7067b53e09
commit 55f944a554
1 changed files with 25 additions and 11 deletions
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docs/setup-guide.md
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@@ -54,16 +54,25 @@ fan control script to work later.
## Phase 3 — BIOS Settings
Still in F2 System Setup. These settings are **required** for GPU and USB
passthrough to work. Missing VT-d is the #1 reason passthrough fails silently.
passthrough to work.
| Menu path | Setting | Value |
|-----------|---------|-------|
| Processor Settings | Virtualization Technology (VT-x) | **Enabled** |
| Processor Settings | VT for Direct I/O (VT-d) | **Enabled** |
| Processor Settings | Virtualization Technology | **Enabled** |
| Processor Settings | C States | **Disabled** |
| PCI Configuration | SR-IOV Global Enable | **Enabled** |
| Boot Settings → BIOS Boot Settings | Boot Mode | **UEFI** (not Legacy/BIOS) |
| Power Management | Hard Disk Drive Sequencing | **Enabled** |
| Power Management | Power Management Policy | **Performance** |
| System Profile Settings | System Profile | **Custom** |
| System Profile Settings | CPU Power Management | **Maximum Performance** |
> **VT for Direct I/O (VT-d):** Newer R730xd BIOS versions (2.19+) removed
> this toggle — VT-d is enabled by default. Don't worry if you can't find it.
> Verify it's active after Proxmox is installed: `dmesg | grep -i iommu`
> should show `DMAR: IOMMU enabled`. The kernel cmdline (`intel_iommu=on
> iommu=pt`) in Phase 9 is still required.
>
> **Hard Disk Drive Sequencing** was also removed in newer BIOS — it is no
> longer present and is not needed.
> **Boot Mode must be UEFI.** Proxmox's EFI boot tool (`proxmox-boot-tool`)
> only works with UEFI. Legacy BIOS mode breaks the GPU passthrough script.
@@ -162,13 +171,18 @@ Proxmox shows "no valid subscription" warnings when using the enterprise repo
without a license. Switch to the free repo:
```bash
# Disable enterprise repo
echo "# disabled" > /etc/apt/sources.list.d/pve-enterprise.list
echo "# disabled" > /etc/apt/sources.list.d/ceph.list
# Disable enterprise repos — PVE9 uses .sources (DEB822 format), not .list
echo "# disabled - no subscription" > /etc/apt/sources.list.d/pve-enterprise.sources
echo "# disabled - no subscription" > /etc/apt/sources.list.d/ceph.sources
# Also disable any legacy .list versions if present
echo "# disabled - no subscription" > /etc/apt/sources.list.d/pve-enterprise.list
echo "# disabled - no subscription" > /etc/apt/sources.list.d/ceph.list
# Add no-subscription repo
echo "deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription" \
# Add no-subscription repos (trixie = Proxmox 9 / Debian 13)
echo "deb http://download.proxmox.com/debian/pve trixie pve-no-subscription" \
> /etc/apt/sources.list.d/pve-no-subscription.list
echo "deb http://download.proxmox.com/debian/ceph-squid trixie no-subscription" \
> /etc/apt/sources.list.d/ceph-no-subscription.list
apt update && apt dist-upgrade -y
reboot
@@ -424,7 +438,7 @@ lspci -nnk | grep -A3 -i nvidia # must show vfio-pci
```bash
dmesg | grep -i iommu
# Should show: "DMAR: IOMMU enabled"
# If not: re-check Phase 3 BIOS settings (VT-d) and Phase 9
# If not: re-check Phase 9 cmdline (intel_iommu=on); VT-d is on by default in newer BIOS
cat /etc/kernel/cmdline # must contain intel_iommu=on iommu=pt
```