Mavericks - Dock not showing on all screens?

I'm having the same problem on 2013 Mac Pro. I have 3 displays in a horizontal configuration, menu and dock only show up on the center display (configured as my main). I think I may have at least figured out what the bug is related to though. This morning I accidentally changed the doc setting from the bottom to the left and the doc went from the bottom of my center screen to the left edge of my left screen. It appears that at least some parts of the OS are treating my 3 27-inch displays as one one monitor. Is this normal?

jtgallucci wrote:

Is this normal?

For the Dock, yes.

For all other purposes, the "Displays have separate spaces" setting would determine if it all is one display or three separate ones.

This help article seemed to solve all my missing dock questions - among other display issues I was experiencing:

OS X: Using multiple displays in Mavericks

Try hovering your mouse at the bottom of the screen on which you want to see the doc, it should appear after a second. If not, check your settings in Mission Control.

Hello,

I was experiencing the same problem at first. But what I did to fix it was I went into the dock settings, and turned on "Automatically hide and show the dock". Once I did this, I was able to pull up the dock from all my monitors. Hopefully this helps you. 🙂

Thank you!

thanks a lot! this solved my issue

"Automatically hide and show the dock" work nice.

I recommend to speed up the display dock and remove the delay with these comands:

defaults write com.apple.dock autohide-time-modifier -float 0.4

defaults write com.apple.dock autohide-delay -int 0

killall Dock

You, Sir, are a genius! Helping me 3 years in the future!

This was affecting me too on El Capitan and I could not see anything in the thread that helped. Fortunately I found a solution that works for me.

1. Go to "System Preferences -> Displays -> Arrangement"
2. Drag the "white bar" at the top of the main screen, into another screen.

Before (the one at the bottom is the main display, at the top 2 external screens)

After

Notes:

• Dock at the bottom, otherwise the solution doesn't work
• As suggested elsewhere, the Dock will appear positioning the mouse at the bottom of the screen and "pushing down" a bit
• Dock is always visible. It doesn't matter though, autohide works too.
• Displays have separate Spaces. I haven't tried to change this setting, I like it this way :-)
• In my setup, the Dock won't show on the top-right screen, because you cannot "push down" without changing screen. However, if you need, there's a solution to this too, you can add some invisible gap that will allow to "push down" on that screen too:

I have a 19" display for pallets and a 27" for canvas. I've played w arrangement. The 19" at the bottom, in the middle, at the top to no avail! 😠 Hey APPLE! What gives?!

I got on w apple help. Go to mission control, check the box for "displays have separate spaces". Then restart.

I have both displays up and running w menu bar and dock on both!

Is this a solution? Would someone please decode the meaning of this answer for me?