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Re: No "Accept" button in OS X window when using HDMI video out

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On 2014-03-17, David Empson <dempson@actrix.gen.nz> wrote:
> Tom Stiller <clusterfux.upmon@gmail.com> wrote:
>> Why not? I know the Mac display is active because I look at and interact with
>> it. System Preferences->Dispkays shows only the HDMI device -- no mirror
>> or second display option.
>
> That isn't normal.

Thanks for your answer.

I was mistaken. I failed to check all the tabs on the Displays pane.
There are, in fact, options for mirroring and extended desktop mode and I just
didn't see them.

> I have a MacBook Pro (Retina, 15-inch, Late 2013) running OS X 10.9.2.
>
> I would expect exactly the same behaviour as below on the 13-inch model,
> as it is the same on every earlier Mac notebook model on which I've
> connected an external display (apart from much earlier models like
> iBooks which only supported mirroring).
>
> If I plug in an external display (in my case a bog standard AOC LCD
> display with no audio capabilities) via the built-in HDMI port, then
> Displays in System Preferences gains the usual "Arrangement" tab, which
> shows the layout of the built-in and connected displays, and has a
> "Mirror Displays" checkbox.
>
> If the displays are not being mirrored (extended desktop mode) then the
> Displays preference pane shows a separate window on each display to
> configure that display. The Arrangement tab is only visible on the
> primary display.
>
> If the displays are mirrored then the Displays preference pane shows
> overlapped but separate windows for each display (visible on both
> displays due to the mirroring). The Arrangement tab will be on one of
> them (not necessarily the same one as it was on when in extended desktop
> mode).

I did not see the overlapped window. I might be forgiven if you could see the
desktop on my wife's computer.

> I can toggle between mirrored and extended desktop modes by pressing
> Command-F1, without having to go through System Preferences > Displays.

Same here, now that I have some idea of what's happening.

> If I leave the external display connected, plug in an external keyboard
> and mouse and close the lid of the MBPro (clamshell mode), the external
> display is now the only one available in System Preferences > Displays,
> and there is no Arrangement tab.

I don't have the equipemnt for that experiment.

> Opening the lid again restores whichever of mirrored or extended desktop
> mode was being used before.
>
> If you really don't see the Arrangement tab and have identical images on
> both displays, with the window naming the external display, that sounds
> like your MBPro thinks it is in clamshell mode but is activating the
> internal display anyway (in mirroring mode). I've never seen that.
>
>
> Testing with incoming FaceTime calls:

I can't make a Facetime call now as my wife is out and would take the call on
her iPhone, I'll try when she returns.
>
> 1. Extended display mode (built-in plus external via HDMI).
> 2. Mirrored mode (built-in plus external via HDMI).
> 3. Clamshell mode (external only, with no external camera or
> microphone).
>
> In all three cases, an incoming FaceTime call had an Accept button. In
> case 3, I didn't get a video preview in the window, since there was no
> camera available.
>
> One special point to note: in case 2 (mirrored mode), by default the
> system turns on Do Not Disturb (which can be accessed via the top of the
> Notification Centre), and while in that state, the Mac doesn't present
> any window when there is an incoming FaceTime call. (I could tell there
> was an incoming call because it also rang on my iPhone.)

That mey be the answer to my initial [perceived] problem.

> I should also note that I have some extra drivers installed for my
> club's EPSON projector via USB, which presents as alternative inputs and
> outputs in System Preferences > Sound (not sure how the input works as
> it isn't documented). This shouldn't be relevant because the projector
> wasn't connected, its audio input and output weren't selected in System
> Preferences > Sound, and even in clamshell mode, the MBPro's internal
> speaker and microphone are available (and work).
>
>> >> You might also note that the HDMI interface is unidirectional; it
>> >> wouldn't matter if the priojector did have a microphone.
>> >
>> > That could be (I have no idea if HDMI supports any data back, but I'll
>> > take your word for it), and it would certainly be another reason for the
>> > HDMI to never show an answer button.
>>
>> It's not just that the HDMI device doesn't show the Accept button, the
>> MacBook's display, which *does* support interaction with the trackpad and
>> keyboard, does not show the button either. That's either a flaw in design
>> or implementation.
>
> If the displays are mirrored and the hypothetical reason for lack of an
> Accept button is limited capabilities of the projector, then the
> internal display wouldn't be able to show that button either, because
> the display was being mirrored.
>
> I haven't yet been able to create a situation where an incoming FaceTime
> call is missing the Accept button.

I'll run some more tests when I know the iPhone won't be answered before
the MacBook.

Thanks again for your insight and help.

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Thread

No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-15 00:04 +0000
  Re: No "Accept" button in OS X window when using HDMI video out Michael Vilain <vilain@NOspamcop.net> - 2014-03-14 23:34 -0700
  Re: No "Accept" button in OS X window when using HDMI video out Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-03-15 12:33 +0000
    Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-15 14:53 +0000
      Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-16 19:15 +0000
        Re: No "Accept" button in OS X window when using HDMI video out Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-03-16 20:21 +0000
          Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-16 21:52 +0000
            Re: No "Accept" button in OS X window when using HDMI video out Warren Oates <warren.oates@gmail.com> - 2014-03-16 18:16 -0400
              Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-17 00:16 +0000
            Re: No "Accept" button in OS X window when using HDMI video out Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-03-16 22:27 +0000
              Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-17 00:35 +0000
                Re: No "Accept" button in OS X window when using HDMI video out Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-03-17 13:13 +0000
                Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-17 15:45 +0000
                Re: No "Accept" button in OS X window when using HDMI video out Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-03-17 16:03 +0000
                Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-17 18:06 +0000
                Re: No "Accept" button in OS X window when using HDMI video out dempson@actrix.gen.nz (David Empson) - 2014-03-18 12:19 +1300
                Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-18 14:02 +0000
                Re: No "Accept" button in OS X window when using HDMI video out Tom Stiller <clusterfux.upmon@gmail.com> - 2014-03-18 20:25 +0000
                Re: No "Accept" button in OS X window when using HDMI video out dempson@actrix.gen.nz (David Empson) - 2014-03-19 09:38 +1300

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