sddmAndNestedLogin
Aug 5, 2021
Technology
目标
系统化说明如何在vdi设备和idv设备上开启sddm的nested模式下Multiseat登录支持。
环境准备
vdi设备信息如下：
Intel(R) Celeron(R) CPU J1900 @ 1.99GHz
# free -m
总计 已用 空闲 共享 缓冲/缓存 可用
内存： 3826 487 1676 317 1662 2758
交换： 0 0 0
# df -h
文件系统 容量 已用 可用 已用% 挂载点
udev 1.9G 0 1.9G 0% /dev
tmpfs 383M 872K 382M 1% /run
/dev/sda5 27G 5.1G 21G 20% /
# cat /etc/issue
Ubuntu 18.04.5 LTS \n \l
# uname -a
Linux xxxx 5.3.0-24-generic #26~18.04.2-Ubuntu SMP Tue Nov 26 12:34:22 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
安装必要的包:
# sudo apt-get update -y
# sudo apt-get upgrade -y
# sudo apt-get install -y sddm xfce4 unzip autoconf automake libtool pkg-config build-essential
# sudo apt-get install -y x11proto-dev xserver-xorg-dev libxcb-util-dev libxcb-icccm4-dev libxcb-image0-dev libxcb-shm0-dev libxcb-randr0-dev vim cmake cmake-extras extra-cmake-modules libpam-dev libxcb-xkb-dev qt5-default libqt5qml5 qt5-qmltooling-plugins qtdeclarative5-dev qttools5-dev xutils-dev
编译相关包
编译xf86-video-nested:
$ git clone https://github.com/smemc/xf86-video-nested.git
$ cd xf86-video-nested
$ ./autogen.sh
$ ./configure --prefix=/usr
$ make -j2
$ sudo make install
编译sddm-nested:
$ git clone https://github.com/purplepalmdash/sddm-nested-multiseat.git
$ cd sddm-nested
$ mkdir build && cd build
$ cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -Wno-dev ..
$ make -j2
$ sudo make install
$ sudo install -v -dm755 -o sddm -g sddm /var/lib/sddm
$ sddm --example-config > sddm.example.conf
$ sudo cp -v sddm.example.conf /etc/sddm.conf
生成配置文件:
cat > /etc/pam.d/sddm << "EOF" &&
# Begin /etc/pam.d/sddm
auth requisite pam_nologin.so
auth required pam_env.so
auth required pam_succeed_if.so uid >= 1000 quiet
auth include common-auth
account include common-account
password include common-password
session required pam_limits.so
session include common-session
# End /etc/pam.d/sddm
EOF
cat > /etc/pam.d/sddm-autologin << "EOF" &&
# Begin /etc/pam.d/sddm-autologin
auth requisite pam_nologin.so
auth required pam_env.so
auth required pam_succeed_if.so uid >= 1000 quiet
auth required pam_permit.so
account include common-account
password required pam_deny.so
session required pam_limits.so
session include common-session
# End /etc/pam.d/sddm-autologin
EOF
cat > /etc/pam.d/sddm-greeter << "EOF"
# Begin /etc/pam.d/sddm-greeter
auth required pam_env.so
auth required pam_permit.so
account required pam_permit.so
password required pam_deny.so
session required pam_unix.so
-session optional pam_systemd.so
# End /etc/pam.d/sddm-greeter
EOF
配置分屏
定义出Intel显卡的输出口：
# vim /etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "DRI" "3"
Option "Monitor-VGA" "VGA"
Option "Monitor-HDMI2" "HDMI2"
EndSection
定义出显示器配置:
Section "Monitor"
Identifier "VGA"
EndSection
Section "Monitor"
Identifier "HDMI2"
Option "Position" "1920 0"
Option "PreferredMode" "1920x1080"
EndSection
Section "Screen"
Identifier "VGA"
Monitor "VGA"
SubSection "Display"
Depth 24
Modes "1920x1080"
EndSubSection
EndSection
Section "Screen"
Identifier "HDMI2"
Monitor "HDMI2"
SubSection "Display"
Depth 24
Modes "1920x1080"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "L1"
Screen "VGA" 0 0
Screen "HDMI2" 1920 0
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
Section "ServerFlags"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
Section "Extensions"
Option "DPMS" "Disable"
EndSection
定义出seat1和seat2的配置:
# vim /etc/X11/seat1.conf
Section "Module"
Load "shadow"
Load "fb"
EndSection
Section "Device"
Identifier "seat1"
Driver "nested"
EndSection
Section "Screen"
Identifier "Screen1"
Device "seat1"
DefaultDepth 24
SubSection "Display"
Depth 24
#Modes "3840x2160"
Modes "1920x1080"
EndSubSection
Option "Origin" "1920 0"
EndSection
Section "ServerLayout"
Identifier "Nested"
Screen "Screen1"
Option "AllowEmptyInput" "true"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
Section "ServerFlags"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
# vim /etc/X11/seat2.conf
Section "Module"
Load "shadow"
Load "fb"
EndSection
Section "Device"
Identifier "seat2"
Driver "nested"
EndSection
Section "Screen"
Identifier "Screen1"
Device "seat2"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1920x1080"
EndSubSection
Option "Origin" "0 0"
EndSection
Section "ServerLayout"
Identifier "Nested"
Screen "Screen1"
Option "AllowEmptyInput" "true"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
Section "ServerFlags"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
定义出USB口与seat的映射关系(注意前置的口USB编号与机箱后部的USB编号的对应关系):
# vim /etc/udev/rules.d/70-seat.rules
SUBSYSTEM=="input", DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-1/*", TAG+="seat", ENV{ID_SEAT}="seat2", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
SUBSYSTEM=="input", DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-4/*", TAG+="seat", ENV{ID_SEAT}="seat2", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
SUBSYSTEM=="input", ATTRS{name}=="Power Button", TAG+="seat", ENV{ID_SEAT}="seat2", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
#SUBSYSTEM=="input", DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-9/*", TAG+="seat", ENV{ID_SEAT}="seat1", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
SUBSYSTEM=="input", DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-2/*", TAG+="seat", ENV{ID_SEAT}="seat1", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
#SUBSYSTEM=="input", DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-6/*", TAG+="seat", ENV{ID_SEAT}="seat1", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
SUBSYSTEM=="input", ATTRS{name}=="Sleep Button", TAG+="seat", ENV{ID_SEAT}="seat1", TAG+="master-of-seat", PROGRAM="/usr/bin/sed -n 's/.*startseat=\([^ ]*\).*/\1/p' /proc/cmdline", RESULT=="true"
开启multi-seat:
# vim /etc/default/grub
.....
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash startseat=true"
GRUB_CMDLINE_LINUX="startseat=true"
....
# update-grub2
重启后验证:
# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-5.3.0-24-generic root=UUID=50368a13-e1d7-4699-8b3b-b5ffc1d148e6 ro startseat=true quiet splash startseat=true vt.handoff=1
配置多用户登录
创建两个用户seat1和seat2:
# useradd -m seat1
# useradd -m seat2
# passwd seat1
# passwd seat2
配置其自动登录([AutoLogin]内只保留如下所示部分):
# cat /etc/sddm.conf | more
[Autologin]
# Whether sddm should automatically log back into sessions when they exit
# Whether sddm should automatically log back into sessions when they exit
Relogin=false,false
SeatName=seat1,seat2
#Session=awesome,awesome
Session=xfce,xfce
User=seat1,seat2
....
Awesome自启动项
在awesome的情景下，我们配置其登录方式为:
# su seat1
$ /bin/bash
$ mkdir -p ~/.config/awesome
$ cp /etc/xdg/awesome/rc.lua ~//.config/awesome
$ vim ~/.config/awesome/autorun.sh
$ vim ~/.config/awesome/autorun.sh
#!/usr/bin/env bash
function run {
if ! pgrep -f $1 ;
then
$@&
fi
}
run sleep3 && /opt/ctg/CtyunClouddeskUniversal/CtyunClouddeskUniversal
$ vim ~/.config/awesome/rc.lua
最后一行添加:
awful.spawn.with_shell("~/.config/awesome/autorun.sh")
$ chmod 777 ~/.config/awesome/autorun.sh
$ rm -rf /tmp/awesome/
$ cp -r ~/.config/awesome /tmp
$ exit
exit
$ exit
# su seat2
$ /bin/bash
$ cp -r /tmp/awesome/ ~/.config/
$ chmod 777 ~/.config/awesome/autorun.sh
$ exit
exit
$ exit
现在重启后即可看到结果，其结果表现为，两路显示独立输出且进入到idv登录前界面。