统信桌面操作系统专业版V20（1070）
Linux uos 5.10.97-arm64-desktop

uos基础 lightdm.log 查看lightdm日志

root@uos:~# cat /var/log
log/            login.defs      logrotate.conf  
root@uos:~# cat /var/log/lightdm/
lightdm.log            seat0-greeter.log      x-0.log                
lightdm.log.old        seat0-greeter.log.old  x-1.log                
root@uos:~# cat /var/log/lightdm/lightdm.log
[+0.03s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.03s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=1422
[+0.03s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.03s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/01_debian.conf
[+0.03s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/100-modprobe.conf
[+0.03s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-deepin.conf
[+0.03s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/70-hw.conf
[+0.03s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/90-deepin-upgrade.conf
[+0.03s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.03s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.03s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf

/*此处省略*/

[+6024.45s] DEBUG: Session pid=15088: Logging to .xsession-errors
[+6025.21s] DEBUG: Activating VT 1
[+6025.21s] DEBUG: Activating login1 session 6
[+6025.21s] DEBUG: Seat seat0 changes active session to 6
[+6025.21s] DEBUG: Session 6 is already active
root@uos:~#