Is it possible to have my dock visible on all monitors in El Capitan?
Solution 1:
After extensive search, I have not found any solution specifically for the native macOS Dock.
However, not wanting to put up with this nuisance, I configured the third party Contexts app to always be visible and show only icons when not hovered.
I'm more than happy with this solution. The only drawback is that you cannot configure the context sidebar to be in the bottom of the display, like the dock.
Disclaimer: I'm not affiliated with this app in any way.
Solution 2:
I am having the same issue. I found a somewhat useful article.
It's saying that you can view the dock on a secondary monitor if you swipe your mouse down twice (towards the edge of the screen) to view the dock on the secondary monitor. The issue is that it disappears from the other monitor. So, you will end up doing it as often as you switch from one monitor to another and need the dock.
I'm curious if there's a better solution to this.
Solution 3:
Go to Mission Control preferences (click Apple icon in upper left of screen, then "System Preferences" then "Mission Control). Then check "Displays have separate spaces." See image below.
Note: if you use multiple Spaces, checking this box will change how they behave. Switching Spaces will now only switch Spaces on the monitor that is currently active, rather than switching Spaces simultaneously across all monitors (the behavior when that box is not checked).