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Sierra displays issue

Brian Tokar
For many years I’ve used various MacBook/Pros to drive an external display.  When I opened the laptop screen I could use both screens side by side, and when I unplugged the display adapter, everything shifted to my laptop screen. But no longer, it seems.

I just got a new SSD drive and upgraded to Sierra (latter without the former seemed like a bad idea, given how often I was seeing the dreaded beachball in El Capitan), and now this isn’t working.  The Sys. Prefs. Displays panel only shows the external display, and when I unplug my display, the laptop screen remains blank.  It’s not that the laptop display is just dimmed; adjusting the brightness didn’t change anything.

How can I recover my laptop display and regain access to the dual screen option?  (It wasn’t an issue with the drive installation — laptop screen was fine while I was transferring files and was on until after I started using my big screen again.)  What will happen when I need to use the Macbook Pro with a projector?

What am I missing here?




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Re: Sierra displays issue

David Tuma
Do you have power to the MBP when using the display?
David

Sent from my iPhone

> On May 18, 2017, at 20:49, Brian Tokar <[hidden email]> wrote:
>
> For many years I’ve used various MacBook/Pros to drive an external display.  When I opened the laptop screen I could use both screens side by side, and when I unplugged the display adapter, everything shifted to my laptop screen. But no longer, it seems.
>
> I just got a new SSD drive and upgraded to Sierra (latter without the former seemed like a bad idea, given how often I was seeing the dreaded beachball in El Capitan), and now this isn’t working.  The Sys. Prefs. Displays panel only shows the external display, and when I unplug my display, the laptop screen remains blank.  It’s not that the laptop display is just dimmed; adjusting the brightness didn’t change anything.
>
> How can I recover my laptop display and regain access to the dual screen option?  (It wasn’t an issue with the drive installation — laptop screen was fine while I was transferring files and was on until after I started using my big screen again.)  What will happen when I need to use the Macbook Pro with a projector?
>
> What am I missing here?
>
>
>
>
> ____________TidBITS Talk Participation Guidelines____________
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> Be polite and constructive, and comment on posts, not people.
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Re: Sierra displays issue

Kim Gammelgaard
In reply to this post by Brian Tokar

> Den 19. maj 2017 kl. 02.49 skrev Brian Tokar <[hidden email]>:
>
> For many years I’ve used various MacBook/Pros to drive an external display.  When I opened the laptop screen I could use both screens side by side, and when I unplugged the display adapter, everything shifted to my laptop screen. But no longer, it seems.
> (…)
>
> What am I missing here?

Did you reset the PRAM and the System Management Controller? I have not seen the issue with anyone around here.


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Re: Sierra displays issue

Brian Tokar
In reply to this post by Brian Tokar
Update:  I Restarted my Macbook Pro with the laptop open and now both screens (and the Arrangement tab) are visible again. I can also unplug and replug the external display again.  So just a small change in how I need to restart or reboot my system.

Another small Sierra question:  Mail no longer seems able to preserve the past state of mailboxes.  Instead of reopening the way I left them, they always seem to reopen back at the top, showing the oldest messages vs. current ones.  I’m not seeing where to adjust this in the Preferences.  Is this fixable?



> On May 18, 2017, at 8:49 PM, Brian Tokar <[hidden email]> wrote:
>
> For many years I’ve used various MacBook/Pros to drive an external display.  When I opened the laptop screen I could use both screens side by side, and when I unplugged the display adapter, everything shifted to my laptop screen. But no longer, it seems.
>
> I just got a new SSD drive and upgraded to Sierra (latter without the former seemed like a bad idea, given how often I was seeing the dreaded beachball in El Capitan), and now this isn’t working.  The Sys. Prefs. Displays panel only shows the external display, and when I unplug my display, the laptop screen remains blank.  It’s not that the laptop display is just dimmed; adjusting the brightness didn’t change anything.
>
> How can I recover my laptop display and regain access to the dual screen option?  (It wasn’t an issue with the drive installation — laptop screen was fine while I was transferring files and was on until after I started using my big screen again.)  What will happen when I need to use the Macbook Pro with a projector?
>
> What am I missing here?
>




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Re: Sierra displays issue

Hector I Macedo-3
Brian, on top of the emails list, click on :”sort by date” and it gives you the choice of “oldest on top” or “newest on top"


On May 19, 2017, at 7:40 AM,5/19/17, Brian Tokar <[hidden email]> wrote:

Another small Sierra question:  Mail no longer seems able to preserve the past state of mailboxes.  Instead of reopening the way I left them, they always seem to reopen back at the top, showing the oldest messages vs. current ones.  I’m not seeing where to adjust this in the Preferences.  Is this fixable?


Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle




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