此款一体机的本机显示屏是.../卡0/卡0-LVDS-1并且 DisplayPort 连接的外接显示器是……/drm/card0/card0-DP-2
希望保留 LVDS 作为嵌入式一体机,并使用其中一个 DP 端口作为多座设置中的外部显示器。但是,loginctl connect seat1 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DP-2 不仅将 DP-2 移动到 seat1,还将 card0 上的所有端口也移动到 seat1。
├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0
│ [MASTER] drm:card0
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DP-1
│ │ [MASTER] drm:card0-DP-1
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/**card0-DP-2**
│ │ [MASTER] drm:card0-DP-2
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DP-3
│ │ [MASTER] drm:card0-DP-3
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DP-4
│ │ [MASTER] drm:card0-DP-4
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/**card0-LVDS-1**
│ │ [MASTER] drm:card0-LVDS-1
│ └─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-VGA-1
│ [MASTER] drm:card0-VGA-1
├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/renderD128
│ drm:renderD128
├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/graphics/fb0
│ [MASTER] graphics:fb0 "radeondrmfb"