如何为双显卡三显示器配置X11的Zaphod模式（双键鼠双席位）

前置准备 #

• 安装依赖组件：xorg-server、xorg-xrandr，以及Intel驱动（xf86-video-intel）和NVIDIA官方闭源驱动（推荐使用闭源驱动以获得更好兼容性）
• 备份原有配置文件：sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak（若原有配置存在）

Xorg.conf配置文件示例 #

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "ScreenIntel" 0 0
    Screen      1  "ScreenNVIDIA" RightOf "ScreenIntel"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard1" "CoreKeyboard"
    InputDevice    "Mouse1" "CorePointer"
    Option         "ZaphodHeads" "DP-1,DVI-D-1,HDMI-1" # 需匹配实际识别的显示器接口，用xrandr --query命令查看
EndSection

Section "Files"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc"
    FontPath        "/usr/share/fonts/TTF"
    FontPath        "/usr/share/fonts/OTF"
    FontPath        "/usr/share/fonts/Type1"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
EndSection

# 第一席位：Intel显卡 + NEC显示器 + 第一套键鼠
Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "libinput"
    Option         "Device" "/dev/input/by-id/usb-[你的键盘ID]-keyboard" # 替换为实际设备ID，用ls /dev/input/by-id/命令查看
    Option         "XkbLayout" "cn" # 按需调整键盘布局
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "libinput"
    Option         "Device" "/dev/input/by-id/usb-[你的鼠标ID]-mouse" # 替换为实际设备ID
EndSection

Section "Monitor"
    Identifier     "MonitorIntel"
    VendorName     "NEC"
    ModelName      "[你的NEC显示器型号]"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "DeviceIntel"
    Driver         "intel"
    VendorName     "Intel Corporation"
    BoardName      "RocketLake-S GT1 [UHD Graphics 730]"
    BusID          "PCI:0:2:0" # 对应lspci输出的00:02.0地址
    Option         "ZaphodHeads" "DP-1" # 对应NEC显示器连接的DP接口
EndSection

Section "Screen"
    Identifier     "ScreenIntel"
    Device         "DeviceIntel"
    Monitor        "MonitorIntel"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
        Modes      "1920x1080" # 替换为你的显示器原生分辨率
    EndSubSection
EndSection

# 第二席位：NVIDIA显卡 + 两台Lenovo显示器 + 第二套键鼠
Section "InputDevice"
    Identifier     "Keyboard1"
    Driver         "libinput"
    Option         "Device" "/dev/input/by-id/usb-[第二套键盘ID]-keyboard" # 替换为实际设备ID
    Option         "XkbLayout" "cn"
EndSection

Section "InputDevice"
    Identifier     "Mouse1"
    Driver         "libinput"
    Option         "Device" "/dev/input/by-id/usb-[第二套鼠标ID]-mouse" # 替换为实际设备ID
EndSection

Section "Monitor"
    Identifier     "MonitorNVIDIA1"
    VendorName     "Lenovo"
    ModelName      "[第一台Lenovo显示器型号]"
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "MonitorNVIDIA2"
    VendorName     "Lenovo"
    ModelName      "[第二台Lenovo显示器型号]"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "DeviceNVIDIA"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GK107 [GeForce GT 1030]"
    BusID          "PCI:2:0:0" # 对应lspci输出的02:00.0地址
    Option         "ZaphodHeads" "DVI-D-1,HDMI-1" # 对应两台Lenovo显示器的接口
EndSection

Section "Screen"
    Identifier     "ScreenNVIDIA"
    Device         "DeviceNVIDIA"
    Monitor        "MonitorNVIDIA1"
    DefaultDepth    24
    Option         "metamodes" "DVI-D-1: 1920x1080 +0+0, HDMI-1: 1920x1080 +1920+0" # 配置双屏排列顺序，按需调整
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

关键配置要点 #

• ZaphodHeads：必须与xrandr --query输出的接口名称完全匹配，每个显卡对应自己的显示器接口集合
• BusID：严格对应lspci输出的显卡PCI地址，格式为PCI:[总线]:[设备]:[功能]（比如00:02.0转成PCI:0:2:0）
• 键鼠设备ID：使用/dev/input/by-id/下的唯一ID，避免通用路径导致的设备冲突
• NVIDIA双屏：通过metamodes参数将两台Lenovo显示器绑定到同一个Screen下，作为第二席位的扩展显示，窗口可在这两台屏间拖动，但不会跨到Intel的显示器

会话启动与故障处理 #

• 启动不同席位的窗口管理器：
  • 第一席位（Intel屏）：DISPLAY=:0.0 evilwm &
  • 第二席位（NVIDIA双屏）：DISPLAY=:0.1 evilwm &
• 若X会话卡死，直接在TTY执行pkill Xorg终止，无需远程操作
• 确保NVIDIA驱动正常：禁用Nouveau驱动，在/etc/modprobe.d/blacklist-nouveau.conf添加blacklist nouveau，然后执行sudo mkinitcpio -P重新生成initramfs

内容的提问来源于stack exchange，提问作者Peter Jordan