Ubuntu 18.04 中没有 Dock

Question

当我单击“活动”时，我只能看到默认的 GNOME Dock：

我已经在尝试做的事情：

1. 我尝试删除 GNOME 文件，例如 .gnome .gnome2 .gconf .gconfd .metacity
2. 我使用Gnome Tweaks GUI禁用所有已安装的 Gnome 扩展。
3. 我“重置为默认值”所有Gnome 调整。
4. 我重置了 gnome 中的所有更改 dconf reset -f /org/gnome/
5. 我尝试安装sudo apt install gnome-shell-extension-ubuntu-dock但收到消息已安装：gnome-shell-extension-ubuntu-dock is already the newest version (0.9.1ubuntu18.04.3).
6. 数以千计的重新启动和注销的..

Answer 1

我个人经历过很多次..因为我在许多新安装的 Ubuntu 18.04 中做的第一件事就是运行sudo rm -rf /usr/share/gnome-shell/extenisons/*这将删除预先启用的扩展，但 apt 仍然认为这没有从系统中删除，这就是为什么它说gnome-shell-extension-ubuntu-dock is already the newest version (0.9.1ubuntu18.04.3).

例子：

pratap@i7-4770U:~$ ls /usr/share/gnome-shell/extensions/
ubuntu-appindicators@ubuntu.com  ubuntu-dock@ubuntu.com
pratap@i7-4770U:~$ sudo rm -rf /usr/share/gnome-shell/extensions/*
[sudo] password for pratap: 
pratap@i7-4770U:~$ ls /usr/share/gnome-shell/extensions/
pratap@i7-4770U:~$ sudo apt install gnome-shell-extension-ubuntu-dock
Reading package lists... Done
Building dependency tree       
Reading state information... Done
gnome-shell-extension-ubuntu-dock is already the newest version (0.9.1ubuntu18.04.3).
0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
pratap@i7-4770U:~$ sudo apt purge gnome-shell-extension-ubuntu-dock
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  gnome-shell-extension-ubuntu-dock* ubuntu-desktop*
0 upgraded, 0 newly installed, 2 to remove and 8 not upgraded.
After this operation, 687 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 233472 files and directories currently installed.)
Removing ubuntu-desktop (1.417.1) ...
Removing gnome-shell-extension-ubuntu-dock (0.9.1ubuntu18.04.3) ...
Processing triggers for libglib2.0-0:amd64 (2.56.4-0ubuntu0.18.04.2) ...
pratap@i7-4770U:~$ 

因此，解决方法是使用以下命令清除扩展

sudo apt purge gnome-shell-extension-ubuntu-dock

然后重新安装

sudo apt install gnome-shell-extension-ubuntu-dock

在这两个命令之间，我不确定..是否需要这些命令

sudo apt autoremove && sudo apt autoclean
gnome-session-logout

然后从任何 tty 安装它，当我遇到这种情况时我不记得了..但猜测该命令也会sudo apt purge gnome-shell-extension-ubuntu-dock删除ubuntu-desktop