macOS Sierra Trouble

[cmalzer2]

In macOS Sierra it´s possible to deactivate display. But still working displays get sticky, not so smooth anymore as they are supposed to!

[Eun]

I don't get the question?

[cmalzer2]

It´s not a question. When I deactivate one display (the main display of a macbookpro OFF; 2 external still ON). The Auto-hide Dock with Magnification ON gets sticky.

[sure-fire]

I tested it out on Sierra (10.12 exactly), and on the surface, things seem okay. Trying to parse @cmalzer2's message here, these were my repro steps:

• Connect an external display via Thunderbolt.
• Extend my Macbook's internal display to the external one.
• Set the OS X dock to Magnificiation On and Auto-Hide on.
• Use DisableMonitor to disable the internal display.
• Use DisableMonitor to re-enable the internal display.

Throughout, the OS X dock respected the Magnification and Auto-Hide settings. I am not sure what the adjective "sticky" is describing, but the animation of the dock rising and falling, as well as icons growing and shrinking, seemed perfectly smooth.

P.S. I just discovered this tool and wanted to say thanks for fulfilling a need that should have been addressed by Apple years ago. I'm pairing your tool with [ControlPlane](https://www.controlplaneapp.com/) to make my Macbook context-aware of when the screen should be on or off. Thanks!!

[cmalzer2]

Hi, I tried screencasting and videoing that behaviour, but I wasn't able to catch it on video.
@sure-fire´s way is exactly how I did it. I´ve connected two external displays (HDMI and ThunderB-2-DVI) but I made the same experience testing it with only one external.
Dock sticky means not 100% smooth, also windows are flickering when moving the mouse.

[yoncy]

I can confirm screen flickering on external display when scrolling the page. Sierra, macbook pro 2015 . External display is connected over HDMI if matters. Unusable for me right now.

[kfigiela]

Any news on the issue?

[cmalzer2]

Hi, flickering is also when quick viewing (Space). I got it on video this time: https://1drv.ms/v/s!Atw_djMOGEe8geVdamKiqZfK1eQoUg
Also background image jams after deactivating notebook screen, see https://1drv.ms/v/s!Atw_djMOGEe8geVdamKiqZfK1eQoUg

[cmalzer2]

Wrong link. This is the right one:
https://1drv.ms/i/s!Atw_djMOGEe8geVeUGH2u1umd0a8tA

[sahirmoosvi]

I can also confirm. the dock and responsiveness of the computer goes down like crazy.

2017 Macbook pro on high sierra.

Typing this was a pain in the ass. Reenabling the monitor makes everything smooth again though

Update: I turned it off and back on again and it's no longer sticking. Some reliability issues then it seems. Cheers though. So helpful