我也遇到过这个问题,解决办法如下 1. 输入命令: cat .xsession-errors pi@raspberrypi:~ $ cat .xsession-errors Xsession: X session started for pi at Sat 20 Jul 23:03:16 CST 2019 dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus dbus-update-activation-environment: setting DISPLAY=:0 dbus-update-activation-environment: setting XAUTHORITY=/home/pi/.Xauthority localuser:pi being added to access control list /etc/X11/Xsession: 36: export: /app/cloud/jdk1.8.0_151: bad variable name 【注意:此处提示报错,是因为不可用的环境变量】 2. 打开环境变量文件后,发现是路径 /app/cloud/jdk1.8.0_151前面多个空格,导致出错,修改后重启就可以显示正常的桌面了。 pi@raspberrypi:~ $ vim /etc/profile