剛測試了一下，感覺是要用「壓」的，也就是游標移到邊界，移動需要有壓到邊界的感覺。
建議您執行下面的指令，測試看看情況會不會改善(主要是前面三個指令)
gsettings set org.gnome.shell.extensions.dash-to-dock require-pressure-to-show false
gsettings set org.gnome.shell.extensions.dash-to-dock show-delay 0
gsettings set org.gnome.shell.extensions.dash-to-dock hide-delay 0
gsettings set org.gnome.shell.extensions.dash-to-dock dock-fixed false
gsettings set org.gnome.shell.extensions.dash-to-dock dock-position 'BOTTOM'
若要恢復上面幾個設定的預設值，則是執行下面指令
gsettings reset org.gnome.shell.extensions.dash-to-dock require-pressure-to-show
gsettings reset org.gnome.shell.extensions.dash-to-dock show-delay
gsettings reset org.gnome.shell.extensions.dash-to-dock hide-delay
gsettings reset org.gnome.shell.extensions.dash-to-dock dock-fixed
gsettings reset org.gnome.shell.extensions.dash-to-dock dock-position
註: 上述動作也可以透過圖形介面程式「
dconf-editor」操作，也就是上面「
#1」提供的「
圖二」。
================================================================================
關於「
gsettings」，我之前有在「
[索引] 泛Ubuntu 安裝調校」紀錄一些討論案例。
================================================================================
以下是順道一提的，提供額外的參考。
================================================================================
執行下面指令，觀看在我的環境的設定值
$ gsettings list-recursively | grep dash-to-dock
顯示
org.gnome.shell.extensions.dash-to-dock click-action 'previews'
org.gnome.shell.extensions.dash-to-dock preferred-monitor -1
org.gnome.shell.extensions.dash-to-dock force-straight-corner false
org.gnome.shell.extensions.dash-to-dock show-show-apps-button true
org.gnome.shell.extensions.dash-to-dock show-windows-preview true
org.gnome.shell.extensions.dash-to-dock animation-time 0.20000000000000001
org.gnome.shell.extensions.dash-to-dock scroll-action 'switch-workspace'
org.gnome.shell.extensions.dash-to-dock height-fraction 0.90000000000000002
org.gnome.shell.extensions.dash-to-dock activate-single-window true
org.gnome.shell.extensions.dash-to-dock running-indicator-dominant-color false
org.gnome.shell.extensions.dash-to-dock custom-theme-customize-running-dots true
org.gnome.shell.extensions.dash-to-dock minimize-shift true
org.gnome.shell.extensions.dash-to-dock show-apps-at-top false
org.gnome.shell.extensions.dash-to-dock pressure-threshold 100.0
org.gnome.shell.extensions.dash-to-dock show-delay 0.0
org.gnome.shell.extensions.dash-to-dock icon-size-fixed true
org.gnome.shell.extensions.dash-to-dock intellihide-mode 'ALL_WINDOWS'
org.gnome.shell.extensions.dash-to-dock customize-alphas false
org.gnome.shell.extensions.dash-to-dock apply-custom-theme false
org.gnome.shell.extensions.dash-to-dock hot-keys true
org.gnome.shell.extensions.dash-to-dock extend-height true
org.gnome.shell.extensions.dash-to-dock background-color '#ffffff'
org.gnome.shell.extensions.dash-to-dock shortcut-timeout 2.0
org.gnome.shell.extensions.dash-to-dock transparency-mode 'ADAPTIVE'
org.gnome.shell.extensions.dash-to-dock multi-monitor false
org.gnome.shell.extensions.dash-to-dock shortcut-text '<Super>q'
org.gnome.shell.extensions.dash-to-dock isolate-workspaces false
org.gnome.shell.extensions.dash-to-dock max-alpha 0.80000000000000004
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-10 ['<Shift><Super>0']
org.gnome.shell.extensions.dash-to-dock hide-delay 0.0
org.gnome.shell.extensions.dash-to-dock show-favorites true
org.gnome.shell.extensions.dash-to-dock custom-theme-running-dots-border-color '#e95420'
org.gnome.shell.extensions.dash-to-dock custom-theme-running-dots-border-width 0
org.gnome.shell.extensions.dash-to-dock app-hotkey-10 ['<Super>0']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-1 ['<Ctrl><Super>1']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-2 ['<Ctrl><Super>2']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-3 ['<Ctrl><Super>3']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-4 ['<Ctrl><Super>4']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-5 ['<Ctrl><Super>5']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-6 ['<Ctrl><Super>6']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-8 ['<Ctrl><Super>8']
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-9 ['<Ctrl><Super>9']
org.gnome.shell.extensions.dash-to-dock app-hotkey-1 ['<Super>1']
org.gnome.shell.extensions.dash-to-dock app-hotkey-2 ['<Super>2']
org.gnome.shell.extensions.dash-to-dock isolate-monitors false
org.gnome.shell.extensions.dash-to-dock app-hotkey-4 ['<Super>4']
org.gnome.shell.extensions.dash-to-dock app-hotkey-5 ['<Super>5']
org.gnome.shell.extensions.dash-to-dock app-hotkey-6 ['<Super>6']
org.gnome.shell.extensions.dash-to-dock app-hotkey-3 ['<Super>3']
org.gnome.shell.extensions.dash-to-dock app-hotkey-8 ['<Super>8']
org.gnome.shell.extensions.dash-to-dock app-hotkey-9 ['<Super>9']
org.gnome.shell.extensions.dash-to-dock custom-theme-shrink true
org.gnome.shell.extensions.dash-to-dock app-hotkey-7 ['<Super>7']
org.gnome.shell.extensions.dash-to-dock autohide true
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-7 ['<Ctrl><Super>7']
org.gnome.shell.extensions.dash-to-dock hotkeys-show-dock true
org.gnome.shell.extensions.dash-to-dock autohide-in-fullscreen false
org.gnome.shell.extensions.dash-to-dock dash-max-icon-size 48
org.gnome.shell.extensions.dash-to-dock background-opacity 0.80000000000000004
org.gnome.shell.extensions.dash-to-dock running-indicator-style 'DOTS'
org.gnome.shell.extensions.dash-to-dock dock-position 'BOTTOM'
org.gnome.shell.extensions.dash-to-dock middle-click-action 'launch'
org.gnome.shell.extensions.dash-to-dock scroll-switch-workspace true
org.gnome.shell.extensions.dash-to-dock app-ctrl-hotkey-10 ['<Ctrl><Super>0']
org.gnome.shell.extensions.dash-to-dock dock-fixed false
org.gnome.shell.extensions.dash-to-dock min-alpha 0.20000000000000001
org.gnome.shell.extensions.dash-to-dock shift-middle-click-action 'minimize'
org.gnome.shell.extensions.dash-to-dock show-running true
org.gnome.shell.extensions.dash-to-dock intellihide true
org.gnome.shell.extensions.dash-to-dock require-pressure-to-show false
org.gnome.shell.extensions.dash-to-dock unity-backlit-items false
org.gnome.shell.extensions.dash-to-dock custom-background-color false
org.gnome.shell.extensions.dash-to-dock custom-theme-running-dots-color '#e95420'
org.gnome.shell.extensions.dash-to-dock shortcut ['<Super>q']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-1 ['<Shift><Super>1']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-2 ['<Shift><Super>2']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-3 ['<Shift><Super>3']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-4 ['<Shift><Super>4']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-5 ['<Shift><Super>5']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-6 ['<Shift><Super>6']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-7 ['<Shift><Super>7']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-8 ['<Shift><Super>8']
org.gnome.shell.extensions.dash-to-dock app-shift-hotkey-9 ['<Shift><Super>9']
org.gnome.shell.extensions.dash-to-dock hotkeys-overlay true
org.gnome.shell.extensions.dash-to-dock bolt-support true
org.gnome.shell.extensions.dash-to-dock shift-click-action 'launch'
org.gnome.shell.extensions.dash-to-dock animate-show-apps true
================================================================================
關於「gnome-shell-extension」，可以參考「
#34 回覆: Ubuntu 17.10 推出」。
而「dock(panel)」，是來自於「
gnome-shell-extension-ubuntu-dock」這個「package」。
執行下面指令，觀看有哪些檔案
$ dpkg -L gnome-shell-extension-ubuntu-dock
顯示
/.
/usr
/usr/share
/usr/share/doc
/usr/share/doc/gnome-shell-extension-ubuntu-dock
/usr/share/doc/gnome-shell-extension-ubuntu-dock/changelog.gz
/usr/share/doc/gnome-shell-extension-ubuntu-dock/copyright
/usr/share/glib-2.0
/usr/share/glib-2.0/schemas
/usr/share/glib-2.0/schemas/10_ubuntu-dock.gschema.override
/usr/share/glib-2.0/schemas/org.gnome.shell.extensions.dash-to-dock.gschema.xml
/usr/share/gnome-shell
/usr/share/gnome-shell/extensions
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/README.md
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/Settings.ui
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/appIconIndicators.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/appIcons.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/convenience.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/dash.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/docking.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/extension.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/intellihide.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/launcherAPI.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/media
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/media/glossy.svg
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/media/highlight_stacked_bg.svg
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/media/highlight_stacked_bg_h.svg
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/media/logo.svg
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/metadata.json
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/stylesheet.css
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/theming.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/utils.js
/usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/windowPreview.js
剛剛執行「gsettings list-recursively | grep dash-to-dock」所得到的設定參數，
可以對照參考下面兩個檔案
*
/usr/share/glib-2.0/schemas/org.gnome.shell.extensions.dash-to-dock.gschema.xml*
/usr/share/glib-2.0/schemas/10_ubuntu-dock.gschema.override================================================================================
執行
$ grep 'require-pressure-to-show' /usr/share/glib-2.0/schemas/org.gnome.shell.extensions.dash-to-dock.gschema.xml -n -A 4
顯示
127: <key type="b" name="require-pressure-to-show">
128- <default>true</default>
129- <summary>Require pressure to show dash</summary>
130- <description>Enable or disable requiring pressure to show the dash</description>
131- </key>
================================================================================
然後設定「dock(panel)」的位置是在左方，右方，下方，還有是否自動隱藏，除了透過指令「
gsettings」來設定，
也可以透過圖形介面程式來設定，也就是透過「
gnome-control-center」這個程式來設定，要切換到「dock」那個頁簽。
或是直接執行下面指令，啟動「
gnome-control-center」後，就會直接簽換到「dock」那個頁簽。
$ gnome-control-center ubuntu
================================================================================
至於上面指令如何找到，方式如下
$ dpkg -L gnome-control-center | grep desktop
顯示
/usr/share/applications/gnome-background-panel.desktop
/usr/share/applications/gnome-bluetooth-panel.desktop
/usr/share/applications/gnome-color-panel.desktop
/usr/share/applications/gnome-control-center.desktop
/usr/share/applications/gnome-datetime-panel.desktop
/usr/share/applications/gnome-default-apps-panel.desktop
/usr/share/applications/gnome-display-panel.desktop
/usr/share/applications/gnome-info-overview-panel.desktop
/usr/share/applications/gnome-keyboard-panel.desktop
/usr/share/applications/gnome-mouse-panel.desktop
/usr/share/applications/gnome-network-panel.desktop
/usr/share/applications/gnome-notifications-panel.desktop
/usr/share/applications/gnome-online-accounts-panel.desktop
/usr/share/applications/gnome-power-panel.desktop
/usr/share/applications/gnome-printers-panel.desktop
/usr/share/applications/gnome-privacy-panel.desktop
/usr/share/applications/gnome-region-panel.desktop
/usr/share/applications/gnome-removable-media-panel.desktop
/usr/share/applications/gnome-search-panel.desktop
/usr/share/applications/gnome-sharing-panel.desktop
/usr/share/applications/gnome-sound-panel.desktop
/usr/share/applications/gnome-thunderbolt-panel.desktop
/usr/share/applications/gnome-ubuntu-panel.desktop
/usr/share/applications/gnome-universal-access-panel.desktop
/usr/share/applications/gnome-user-accounts-panel.desktop
/usr/share/applications/gnome-wacom-panel.desktop
/usr/share/applications/gnome-wifi-panel.desktop
執行
$ dpkg -L gnome-control-center | grep desktop | grep ubuntu-panel
顯示
/usr/share/applications/gnome-ubuntu-panel.desktop
執行
$ grep '^Exec=' /usr/share/applications/gnome-ubuntu-panel.desktop
顯示
Exec=gnome-control-center ubuntu
關於這部份的概念，之前在「
#25 回覆: Ubuntu 17.10 推出」有相關的紀錄。
================================================================================
接著來簡易探索原始碼
執行下面指令，下載「
gnome-control-center」的「Source Package:
gnome-control-center」。
$ apt-get source gnome-control-center
會下載三個檔案
* gnome-control-center_3.28.2-0ubuntu0.18.04.2.debian.tar.xz
* gnome-control-center_3.28.2-0ubuntu0.18.04.2.dsc
* gnome-control-center_3.28.2.orig.tar.xz
並且會解開到「gnome-control-center-3.28.2」這個資料夾
================================================================================
接著簡易探索「gnome-control-center-3.28.2/panels/ubuntu/」
執行
$ grep 'dock-fixed' gnome-control-center-3.28.2/panels/ubuntu/cc-ubuntu-panel.c -n -A 2
顯示
335: g_settings_bind (panel->ubuntu_dock_settings, "dock-fixed",
336- sw, "active",
337- G_SETTINGS_BIND_INVERT_BOOLEAN);
================================================================================
回過頭來，也可以簡易探索「dash-to-dock」
執行
$ grep 'dock-fixed' /usr/share/gnome-shell/extensions/ubuntu-dock@ubuntu.com/* -R -n
================================================================================
一些關於「gnome-shell」的討論案例連結，之前有紀錄在「
#22 回覆: Ubuntu 17.10 推出」
================================================================================
以上提供參考
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