Is Qualcomm's Wi-Fi 7 NIC Really This Bad? Passthrough Fails on Proxmox VE (PVE)

[antihero]

Sudden Idea to Passthrough Wi-Fi 7 Cards via PVE: Intel BE200 & MTK MT7927 Work, but Qualcomm QCN865 Fails with "Device Cannot Start: Code 10, STATUS_DEVICE_POWER_FAILURE"


Details:

• Test Setup:
  
  • PVE 8.3.4, Intel Xeon Gold 5218, Linux Kernel 6.8.12-8-pve (2025-01-24).
  • Tested Wi-Fi 7 cards: Intel BE200, MediaTek MT7927, Qualcomm QCN865.
  • Passthrough method: PCIe direct passthrough to Windows 11 VM.
• Results:
  
  • Intel BE200 & MediaTek MT7927: Work flawlessly after driver installation.
  • Qualcomm QCN865: Fails with error:
    

    "This device cannot start (Code 10). STATUS_DEVICE_POWER_FAILURE"

  • Bare-Metal Test: Qualcomm QCN865 works normally on the same hardware with native Windows 11.

Question:

1. Is this a Qualcomm hardware/driver issue (e.g., incomplete virtualization support)? Would waiting for driver updates resolve it?
2. Or is it a PVE configuration issue? If so, what adjustments are needed?
   • Suspected areas: ACS settings, power management, or kernel parameters.

Additional Info:

• IOMMU groups for QCN865 are isolated.
• Tried pcie_acs_override=downstream, vfio-pci driver binding, and disabling ASPM – no improvement.

Request:
Any insights or fixes from the community would be appreciated!

---

Notes for Clarity:

• Maintains technical terms like "PCIe passthrough," "Code 10," and "STATUS_DEVICE_POWER_FAILURE."
• Structure highlights critical comparisons (working vs. failing devices) and bare-metal validation.
• Directly asks for root cause analysis and actionable solutions.

突发奇想使用pve直通wifi7无线网卡，相同配置的情况下，测试了intel be200 mtk mt7927 Qualcomm qcn865，发现唯独Qualcomm qcn865这款无线网卡直通后在虚拟机内打驱动后会报错：该设备无法启动：代码10，STATUS_DEVICE_POWER_FAILURE;
测试环境：PVE 8.3.4、Intel(R) Xeon(R) Gold 5218 CPU、内核版本：Linux 6.8.12-8-pve (2025-01-24T12:32Z)
并且进行了裸机测试：在相同宿主机，直接安装win11就能驱动Qualcomm qcn865；
请大家看看这应该是高通无线网卡的问题，还是PVE的问题；
如果是高通无线网卡的问题，是否等待驱动完善即可？
如果是PVE的问题，哪里的配置需要调整？

 

[l.leahu-vladucu]

Hello antihero! Can you please post the following:

1. Your VM configuration (the output of qm config <VMID>).
2. The output of dmesg.
3. The output of lsmod | grep vfio
4. The output of lspci -nnk