WorkingTipsOnMultiSeat
Jul 6, 2021
Technology
steps
default seat:
# loginctl seat-status seat0>seat0.txt
# cat seat0.txt
seat0
Sessions: *1
Devices:
├─/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1
│ input:input1 "Power Button"
├─/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input14
│ input:input14 "Video Bus"
├─/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0
│ input:input0 "Power Button"
├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0
│ [MASTER] drm:card0
│ ├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1
│ │ [MASTER] drm:card0-DP-1
│ ├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1
│ │ [MASTER] drm:card0-HDMI-A-1
│ ├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-2
│ │ [MASTER] drm:card0-HDMI-A-2
│ └─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1
│ [MASTER] drm:card0-eDP-1
│ └─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight
│ backlight:intel_backlight
├─/sys/devices/pci0000:00/0000:00:02.0/graphics/fb0
│ graphics:fb0 "i915drmfb"
├─/sys/devices/pci0000:00/0000:00:03.0/sound/card1
│ sound:card1 "HDMI"
│ ├─/sys/devices/pci0000:00/0000:00:03.0/sound/card1/input16
│ │ input:input16 "HDA Intel HDMI HDMI/DP,pcm=3"
│ ├─/sys/devices/pci0000:00/0000:00:03.0/sound/card1/input17
│ │ input:input17 "HDA Intel HDMI HDMI/DP,pcm=7"
│ ├─/sys/devices/pci0000:00/0000:00:03.0/sound/card1/input18
│ │ input:input18 "HDA Intel HDMI HDMI/DP,pcm=8"
│ ├─/sys/devices/pci0000:00/0000:00:03.0/sound/card1/input19
│ │ input:input19 "HDA Intel HDMI HDMI/DP,pcm=9"
│ └─/sys/devices/pci0000:00/0000:00:03.0/sound/card1/input20
│ input:input20 "HDA Intel HDMI HDMI/DP,pcm=10"
├─/sys/devices/pci0000:00/0000:00:14.0/usb2
│ usb:usb2
│ └─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3
│ usb:2-3
│ └─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15
│ input:input15 "Logitech K400 Plus"
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15/input15::capslock
│ │ leds:input15::capslock
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15/input15::compose
│ │ leds:input15::compose
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15/input15::kana
│ │ leds:input15::kana
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15/input15::numlock
│ │ leds:input15::numlock
│ └─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.2/0003:046D:C52B.0003/0003:046D:404D.0004/input/input15/input15::scrolllock
│ leds:input15::scrolllock
├─/sys/devices/pci0000:00/0000:00:14.0/usb3
│ usb:usb3
├─/sys/devices/pci0000:00/0000:00:1b.0/sound/card0
│ sound:card0 "PCH"
│ └─/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/input8
│ input:input8 "HDA Intel PCH Headphone"
├─/sys/devices/pci0000:00/0000:00:1d.0/usb1
│ usb:usb1
│ └─/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1
│ usb:1-1
└─/sys/devices/platform/pcspkr/input/input7
input:input7 "PC Speaker"
找寻对应的口：
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1
/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3
/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1
Attach:
# loginctl attach seat1 /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1
# loginctl attach seat1 /sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3
➜ ~ loginctl seat-status seat1
seat1
Devices:
├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1
│ [MASTER] drm:card0-eDP-1
│ └─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight
│ backlight:intel_backlight
└─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3
usb:2-2.3
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10
│ input:input10 "G-Tech Fuhlen SM680 Mechanical Keyboard"
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10/input10::capslock
│ │ leds:input10::capslock
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10/input10::compose
│ │ leds:input10::compose
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10/input10::kana
│ │ leds:input10::kana
│ ├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10/input10::numlock
│ │ leds:input10::numlock
│ └─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.0/0003:1A81:2019.0005/input/input10/input10::scrolllock
│ leds:input10::scrolllock
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.1/0003:1A81:2019.0006/input/input11
│ input:input11 "G-Tech Fuhlen SM680 Mechanical Keyboard Mouse"
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.1/0003:1A81:2019.0006/input/input12
│ input:input12 "G-Tech Fuhlen SM680 Mechanical Keyboard"
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.1/0003:1A81:2019.0006/input/input13
│ input:input13 "G-Tech Fuhlen SM680 Mechanical Keyboard Consumer Control"
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.1/0003:1A81:2019.0006/input/input14
│ input:input14 "G-Tech Fuhlen SM680 Mechanical Keyboard System Control"
├─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.2/0003:1A81:2019.0007/input/input16
│ input:input16 "G-Tech Fuhlen SM680 Mechanical Keyboard"
└─/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3/2-2.3:1.3/0003:1A81:2019.0008/input/input17
input:input17 "G-Tech Fuhlen SM680 Mechanical Keyboard"
Verify:
➜ ~ ls -l /etc/udev/rules.d/
total 12
-rw-r--r-- 1 root root 76 Jul 6 06:22 72-seat-drm-pci-0000_00_02_0.rules
-rw-r--r-- 1 root root 86 Jul 6 06:23 72-seat-usb-pci-0000_00_14_0-usb-0_2_3.rules
-rw-r--r-- 1 root root 432 Aug 10 2020 99-kvmd.rules.pacsave
Disable lxdm and testing:
# systemctl disable lxdm
Removed /etc/systemd/system/display-manager.service.
# reboot