我几乎成功地在全新安装的 Ubuntu 20.04 中设置了 TigerVNC。我的问题是，如果我进行日志记录并通过执行以下命令手动启动 vncserver 服务，我才能获得有用的屏幕：
sudo systemctl start vncserver@1
然后，使用 RealVNC 客户端连接后，我得到了我期望的结果：
问题是：如果我重新启动整台机器，我可以连接到服务器，但屏幕完全是黑色的：
服务状态为：
$ sudo systemctl status [email protected]
● [email protected] - Start TightVNC server at startup
Loaded: loaded (/etc/systemd/system/[email protected]; enabled; vendor preset: enabled)
Active: active (running) since Wed 2021-02-24 06:11:37 -03; 4min 42s ago
Process: 723 ExecStartPre=/usr/bin/vncserver -kill :1 > /dev/null 2>&1 (code=exited, status=0/SUCCESS)
Process: 786 ExecStart=/usr/bin/vncserver -depth 24 -geometry 1280x800 -localhost :1 (code=exited, status=0/SUCCESS)
Main PID: 800 (Xtigervnc)
Tasks: 41 (limit: 9326)
Memory: 108.0M
CGroup: /system.slice/system-vncserver.slice/[email protected]
├─800 /usr/bin/Xtigervnc :1 -desktop sc-002-nuc:1 (impuser) -auth /home/impuser/.Xauthority -geometry 1280x800 -depth 24 -rfbwait 30000 -rfbauth /home/impuser/.vnc/passwd -rfbport 5901 -pn >
├─865 dbus-launch --exit-with-session /usr/libexec/gnome-session-binary --builtin
├─867 /usr/bin/dbus-daemon --syslog --fork --print-pid 5 --print-address 7 --session
├─875 /usr/libexec/gvfsd
├─880 /usr/libexec/gvfsd-fuse /home/impuser/.cache/gvfs -f -o big_writes
├─913 /usr/libexec/at-spi-bus-launcher
├─918 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3
└─940 /usr/bin/gnome-keyring-daemon --start --components=pkcs11
fev 24 06:11:38 sc-002-nuc gnome-session[825]: gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
fev 24 06:11:38 sc-002-nuc gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
fev 24 06:11:38 sc-002-nuc org.gnome.Shell.desktop[965]: Window manager warning: Unsupported session type
fev 24 06:11:38 sc-002-nuc gnome-session[825]: gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
fev 24 06:11:38 sc-002-nuc gnome-session[825]: gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly
fev 24 06:11:38 sc-002-nuc gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
fev 24 06:11:38 sc-002-nuc gnome-session-binary[825]: Unrecoverable failure in required component org.gnome.Shell.desktop
fev 24 06:11:38 sc-002-nuc gnome-session[825]: gnome-session-binary[825]: CRITICAL: We failed, but the fail whale is dead. Sorry....
fev 24 06:11:38 sc-002-nuc gnome-session-binary[825]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly
fev 24 06:11:38 sc-002-nuc gnome-session-binary[825]: CRITICAL: We failed, but the fail whale is dead. Sorry....
但如果我手动重新启动该服务，则该服务正常运行：
$ sudo systemctl stop vncserver@1
$ sudo systemctl start vncserver@1
$ sudo systemctl status [email protected]
● [email protected] - Start TightVNC server at startup
Loaded: loaded (/etc/systemd/system/[email protected]; enabled; vendor preset: enabled)
Active: active (running) since Wed 2021-02-24 07:10:13 -03; 7s ago
Process: 2368 ExecStartPre=/usr/bin/vncserver -kill :1 > /dev/null 2>&1 (code=exited, status=0/SUCCESS)
Process: 2373 ExecStart=/usr/bin/vncserver -depth 24 -geometry 1280x800 -localhost :1 (code=exited, status=0/SUCCESS)
Main PID: 2383 (Xtigervnc)
Tasks: 318 (limit: 9326)
Memory: 371.4M
CGroup: /system.slice/system-vncserver.slice/[email protected]
├─2383 /usr/bin/Xtigervnc :1 -desktop sc-002-nuc:1 (impuser) -auth /home/impuser/.Xauthority -geometry 1280x800 -depth 24 -rfbwait 30000 -rfbauth /home/impuser/.vnc/passwd -rfbport 5901 -pn>
├─2414 /usr/libexec/gnome-session-binary --builtin
├─2417 dbus-launch --exit-with-session /usr/libexec/gnome-session-binary --builtin
├─2418 /usr/bin/dbus-daemon --syslog --fork --print-pid 5 --print-address 7 --session
├─2424 /usr/libexec/gvfsd
├─2429 /usr/libexec/gvfsd-fuse /home/impuser/.cache/gvfs -f -o big_writes
├─2459 /usr/libexec/at-spi-bus-launcher
├─2464 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3
├─2486 /usr/bin/gnome-keyring-daemon --start --components=secrets
├─2500 /usr/bin/gnome-shell
├─2535 ibus-daemon --panel disable --xim
├─2539 /usr/libexec/ibus-dconf
├─2540 /usr/libexec/ibus-extension-gtk3
├─2542 /usr/libexec/ibus-x11 --kill-daemon
├─2544 /usr/libexec/ibus-portal
├─2557 /usr/libexec/at-spi2-registryd --use-gnome-session
├─2562 /usr/libexec/xdg-permission-store
├─2566 /usr/libexec/gnome-shell-calendar-server
├─2574 /usr/libexec/evolution-source-registry
├─2582 /usr/libexec/goa-daemon
├─2586 /usr/libexec/evolution-calendar-factory
├─2594 /usr/libexec/goa-identity-service
├─2607 /usr/libexec/dconf-service
├─2614 /usr/libexec/evolution-addressbook-factory
├─2624 /usr/libexec/gvfs-udisks2-volume-monitor
├─2635 /usr/libexec/gvfs-gphoto2-volume-monitor
├─2640 /usr/libexec/gvfs-goa-volume-monitor
├─2645 /usr/libexec/gvfs-mtp-volume-monitor
├─2650 /usr/libexec/gvfs-afc-volume-monitor
├─2660 /usr/bin/gjs /usr/share/gnome-shell/org.gnome.Shell.Notifications
├─2674 /usr/libexec/gsd-usb-protection
├─2676 /usr/libexec/gsd-wacom
├─2677 /usr/libexec/gsd-media-keys
├─2679 /usr/libexec/gsd-rfkill
├─2681 /usr/libexec/gsd-a11y-settings
├─2682 /usr/libexec/gsd-xsettings
├─2684 /usr/libexec/gsd-power
├─2688 /usr/libexec/gsd-screensaver-proxy
├─2689 /usr/libexec/gsd-color
├─2693 /usr/libexec/gsd-print-notifications
├─2694 /usr/libexec/gsd-sharing
├─2698 /usr/libexec/gsd-wwan
├─2711 /usr/libexec/gsd-datetime
├─2713 /usr/libexec/gsd-smartcard
├─2715 /usr/libexec/gsd-housekeeping
这是我的 xstartup 文件的内容：
~$ cat ~/.vnc/xstartup
#!/bin/sh
PATH=/usr/bin:/usr/sbin
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
exec /usr/bin/gnome-session &
$ ls -ls ~/.vnc/xstartup
4 -rwxrw-r-- 1 my_user my_user 117 fev 24 06:06 /home/my_user/.vnc/xstartup
通过 ssh 远程重启服务不起作用。因此，我认为这个问题与某些 gnome 初始化有关，但我无法自己修复它。
编辑：xstartup有x权限。