full screen on my secondary monitor

Hi,


I’m trying to make a youtube video go full screen on my secondary monitor, but it won’t work- it always switches to go full screen on my main iMac screen (and/or sometimes makes the other screen black and unusable). Could you please help?

Its not just youtube either- I just tried it with an Evernote window and it made it full screen on the secondary monitor, but it made the iMac screen completely black. Happens with all applications I think. I’ve searched online and it seems a lot of people have had this issue, but I can’t find a fix. How can I make full screen work right on second monitor?


Thanks, Dan


Specs:

OS : 10.12.6 (16G29)

iMac (Retina 5K, 27-inch, Late 2015)

How are you going fullscreen? Clicking on the green button on the window top-left?

How many tabs are open, and what browser are you using to do this? Also, how do your have it set up in System Preferences > Displays?

Raz0rEdge said:

How are you going fullscreen? Clicking on the green button on the window top-left?

Click to expand...

Yes, or using a the menu bar shortcut, or keyboard shortcut, or using youtube full screen button in bottom right of youtube.

ferrarr said:

How many tabs are open, and what browser are you using to do this? Also, how do your have it set up in System Preferences > Displays?

Click to expand...

Happens with one tab or many, with both safari chrome and firefox.

Here are the display settings:

https://www.dropbox.com/s/9s6xxyl8bfi7mrh/Screenshot 2017-11-03 09.59.41.png?dl=0

https://www.dropbox.com/s/q1d92eayagy5grd/Screenshot 2017-11-03 10.01.25.png?dl=0


Here are the mission control settings (had heard that this might be helpful for this issue too):

https://www.dropbox.com/s/49fhe45o6072tpa/Screenshot 2017-11-03 09.59.49.png?dl=0