修复Proxmox 无法启动GUI的bug

Xorg -configure
cp /xorg.conf.new /etc/X11/xorg.conf
sed -i 's/amdgpu/fbdev/g' /etc/X11/xorg.conf
startx

• 编辑grub开启直通

sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet"/GRUB_CMDLINE_LINUX_DEFAULT="quiet iommu=pt initcall_blacklist=sysfb_init"/g' /etc/default/grub
update-grub

• 下面的直接无脑操作

cat >>/etc/modules <<EOF
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd
EOF
cat >>/etc/modprobe.d/pve-blacklist.conf <<EOF
blacklist amdgpu
blacklist snd_hda_intel
EOF
cat >/etc/modprobe.d/vfio.conf <<EOF
options vfio-pci ids=1002:1681,1002:1640
EOF

提取VBios

需要自己编译

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

typedef uint32_t ULONG;
typedef uint8_t UCHAR;
typedef uint16_t USHORT;

typedef struct {
    ULONG Signature;
    ULONG TableLength; // Length
    UCHAR Revision;
    UCHAR Checksum;
    UCHAR OemId[6];
    UCHAR OemTableId[8]; // UINT64  OemTableId;
    ULONG OemRevision;
    ULONG CreatorId;
    ULONG CreatorRevision;
} AMD_ACPI_DESCRIPTION_HEADER;

typedef struct {
    AMD_ACPI_DESCRIPTION_HEADER SHeader;
    UCHAR TableUUID[16]; // 0x24
    ULONG VBIOSImageOffset; // 0x34. Offset to the first GOP_VBIOS_CONTENT block from the beginning of the stucture.
    ULONG Lib1ImageOffset; // 0x38. Offset to the first GOP_LIB1_CONTENT block from the beginning of the stucture.
    ULONG Reserved[4]; // 0x3C
} UEFI_ACPI_VFCT;

typedef struct {
    ULONG PCIBus; // 0x4C
    ULONG PCIDevice; // 0x50
    ULONG PCIFunction; // 0x54
    USHORT VendorID; // 0x58
    USHORT DeviceID; // 0x5A
    USHORT SSVID; // 0x5C
    USHORT SSID; // 0x5E
    ULONG Revision; // 0x60
    ULONG ImageLength; // 0x64
} VFCT_IMAGE_HEADER;

typedef struct {
    VFCT_IMAGE_HEADER VbiosHeader;
    UCHAR VbiosContent[1];
} GOP_VBIOS_CONTENT;

int main(int argc, char** argv)
{
    FILE* fp_vfct;
    FILE* fp_vbios;
    UEFI_ACPI_VFCT* pvfct;
    char vbios_name[0x400];

    if (!(fp_vfct = fopen("/sys/firmware/acpi/tables/VFCT", "r"))) {
        perror(argv[0]);
        return -1;
    }

    if (!(pvfct = malloc(sizeof(UEFI_ACPI_VFCT)))) {
        perror(argv[0]);
        return -1;
    }

    if (sizeof(UEFI_ACPI_VFCT) != fread(pvfct, 1, sizeof(UEFI_ACPI_VFCT), fp_vfct)) {
        fprintf(stderr, "%s: failed to read VFCT header!\n", argv[0]);
        return -1;
    }

    ULONG offset = pvfct->VBIOSImageOffset;
    ULONG tbl_size = pvfct->SHeader.TableLength;

    if (!(pvfct = realloc(pvfct, tbl_size))) {
        perror(argv[0]);
        return -1;
    }

    if (tbl_size - sizeof(UEFI_ACPI_VFCT) != fread(pvfct + 1, 1, tbl_size - sizeof(UEFI_ACPI_VFCT), fp_vfct)) {
        fprintf(stderr, "%s: failed to read VFCT body!\n", argv[0]);
        return -1;
    }

    fclose(fp_vfct);

    while (offset < tbl_size) {
        GOP_VBIOS_CONTENT* vbios = (GOP_VBIOS_CONTENT*)((char*)pvfct + offset);
        VFCT_IMAGE_HEADER* vhdr = &vbios->VbiosHeader;

        if (!vhdr->ImageLength)
            break;

        snprintf(vbios_name, sizeof(vbios_name), "vbios_%x_%x.bin", vhdr->VendorID, vhdr->DeviceID);

        if (!(fp_vbios = fopen(vbios_name, "wb"))) {
            perror(argv[0]);
            return -1;
        }

        if (vhdr->ImageLength != fwrite(&vbios->VbiosContent, 1, vhdr->ImageLength, fp_vbios)) {
            fprintf(stderr, "%s: failed to dump vbios %x:%x\n", argv[0], vhdr->VendorID, vhdr->DeviceID);
            return -1;
        }

        fclose(fp_vbios);

        printf("dump vbios %x:%x to %s\n", vhdr->VendorID, vhdr->DeviceID, vbios_name);

        offset += sizeof(VFCT_IMAGE_HEADER);
        offset += vhdr->ImageLength;
    }

    return 0;
}

编译

gcc vbios.c -o vbios
./vbios
mv vbios_1002_1681.bin /usr/share/kvm/

创建虚拟机时，BIOS 选择 SeaBIOS，Machine 选择 q35，Disks Bus/Device 选择 SCSI 并勾选 Discard 和 SSD emulation，Network Model 选择 VirtIO。

安装完成后在 Windows 虚拟机内启用远程桌面并关机。

在虚拟机配置页面添加 PCI Device 选择 0000:74:00.0（显卡）并勾选 Primary GPU 和 PCI-Express，再添加一个 0000:74:00.1 (声卡)。将 Display 的 Graphic card 修改为 none。直通你的键盘和鼠标。

编辑 /etc/pve/qemu-server/.conf，在显卡后追加 romfile=vbios_1002_1681.bin。sed -i 's/0000:74:00.0,pcie=1,x-vga=1/0000:74:00.0,pcie=1,x-vga=1,romfile=vbios_1002_1681.bin/g' /etc/pve/qemu-server/<VM ID>.conf

启动虚拟机，通过远程桌面连接后下载驱动程序并安装（安装时选择 Driver Only）。

至此，核显直通流程基本完成。后续虚拟机每次关机之前须通过远程桌面手动弹出显卡及声卡，否则会导致 Proxmox VE 强制重启！

谢谢WJY大佬的指导

原文地址：https://gist.github.com/wjy20030407/f0b3658d56e8dec043614a6bdebed929