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jqc

macrumors 6502
Original poster
Jun 30, 2007
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it seems both the AS Air and Pro can only support one external monitor, which is extremely disappointing. I was hoping to replace my 2013 MBP which is still performing fine, but two external monitors is a must for me for WFH. So disappointing.
 

Erehy Dobon

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Feb 16, 2018
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Today on the M1.

My guess is that Apple has more capable ASi prototype SoCs in their labs that can handle multiple monitors.

Apple did say that this was a two-year transition. My guess is that more advanced and complex functionality will arrive closer to the end of this two-year transition period rather than the beginning.
 

jqc

macrumors 6502
Original poster
Jun 30, 2007
394
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Today on the M1.

My guess is that Apple has more capable ASi prototype SoCs in their labs that can handle multiple monitors.

Apple did say that this was a two-year transition. My guess is that more advanced and complex functionality will arrive closer to the end of this two-year transition period rather than the beginning.
which is fine, but multiple monitor support seems like a pretty basic feature these days. Maybe the replacement for the 4 port 13" (14" MBP?) will have this, as it seems to be a limitation with the thunderbolt bus? The new Mac mini supports 2 external monitors, one through USB and one through the HDMI.
 

Erehy Dobon

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Well then wait a year or two.

My guess is that 95% of the users who select the MacBook Air, Mac mini, entry-level MacBook Pro 13" don't need to drive multiple monitors. I'm pretty sure Apple has years and years of data on how people use their products. Assuming they don't sell this data, the data collection might not require an opt-in.

I'm sure when Henry Ford introduced the Model A, some people were bummed that they couldn't tow their boat with the new vehicle.

Let Apple do their thing. They have repeatedly said this was a two year transition period. No one should expect everything on Day One.
 

Andropov

macrumors 6502a
May 3, 2012
746
990
Spain
I would bet both Thunderbolt/USB4 ports are connected to the same DisplayPort 1.4 stream so only one port can be used at once. The Mac Mini's HDMI must be connected in a different way, hence the dual display support. Obviously is not a matter of raw GPU power since it's "5x" more powerful than the last version.
 

_Forever

macrumors member
Nov 10, 2020
36
22
I use two monitors, I'm pretty bummed out. I ordered an Air earlier, I guess I'll have to cancel.
 

cmhsam

macrumors 6502
Jul 14, 2008
448
70
Is this confirmed that even the 13” AS Pro only supports one monitor? What if it’s connected to a TB dock like the Cal Digit TS3+
 

jqc

macrumors 6502
Original poster
Jun 30, 2007
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204
Is this confirmed that even the 13” AS Pro only supports one monitor? What if it’s connected to a TB dock like the Cal Digit TS3+
The spec page is confusing. It says it can support built in display and one external display, but they also say thunderbolt 3 digital video output. Im not sure what that means.
 

NT1440

macrumors Pentium
May 18, 2008
15,092
22,158
it seems both the AS Air and Pro can only support one external monitor, which is extremely disappointing. I was hoping to replace my 2013 MBP which is still performing fine, but two external monitors is a must for me for WFH. So disappointing.
Where are you getting the idea only one monitor is supported? It’s got thunderbolt and USB C, both of which are capable of driving multiple monitors.

Did I miss something??
 

Andropov

macrumors 6502a
May 3, 2012
746
990
Spain
Where are you getting the idea only one monitor is supported?

From Apple's tech specs page for the MacBook Pro:

Screenshot 2020-11-11 at 03.42.16.png


Which says "One external display".
 
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Rastafabi

macrumors 6502
Mar 12, 2013
348
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Europe
This is puzzling… especially as thunderbolt 3 used to support two monitors per cable (on apple devices) per se. For instance even the LG Ultrafine 5k (at leats the first gen model) did rely on this, as it is a MST display (two DP1.2 streams), while the Apple 6K one uses SST DisplayPort 1.4 with data-stream compression if I'm not mistaken.

EDIT:
I would assume this applies:

You can connect up to one 6K display or two 5K or 4K displays in these configurations:

  • One 6K display with resolutions of 6016 x 3384 10bpc @ 60Hz
  • One 5K display with a resolution of 5120 x 2880 10bpc @ 60Hz
  • Two 5K displays with resolutions of 5120 x 2880 8bpc @ 60Hz
  • Two 4K displays with resolutions of 3840x2160 10bpc @ 60Hz or 4096x2304 8 bpc @ 60Hz
 
Last edited:

NT1440

macrumors Pentium
May 18, 2008
15,092
22,158
From Apple's tech specs page for the MacBook Pro:

View attachment 1658872

Which says "One external display".
Inelegant wording, but unless Apple somehow gimped the thunderbolt/usb c standards (hence not being able to use the names) I think you guys are reading way too much into this.

USB C alone supports multiple 1080p monitors, I don’t buy for a second that you’ll only be able to drive one external display.

I think we’re going to see clarification on this soon. I believe this is them inelegantly explaining that the thunderbolt protocol is what supports 6K on one display.
 

jqc

macrumors 6502
Original poster
Jun 30, 2007
394
204
Guess we’ll find out next week!

also wondering if they will have spatial audio; at this point I’m thinking these laptops are more an alternative to the iPad pros w magic keyboards.
 

cmhsam

macrumors 6502
Jul 14, 2008
448
70
In ordered the 13” pro AS. When it gets here I can try and then decide. I have to agree it’s a huge step back if this is accurate. I think it just needs clarification
 

curmudgeonette

macrumors 6502a
Jan 28, 2016
586
496
California
Where are you getting the idea only one monitor is supported? It’s got thunderbolt and USB C, both of which are capable of driving multiple monitors.
Quite likely the M1 can only output two video streams. On the laptops, one is dedicated to the screen, the other to the ports. The Mini, with no screen, can send one to HDMI, and the other to the USB-C/Thunderbolt ports.

It doesn't matter if the interface connector supports multiple monitors - if there isn't extra hardware (in the M1) to read from a frame buffer, then you don't get additional displays.
 

chabig

macrumors G4
Sep 6, 2002
11,450
9,321
What does the Thunderbolt 3 section mean though? Why make this distinction?
The spec says you have one external display. Thunderbolt is just one of the supported interfaces to that display.
 

cmhsam

macrumors 6502
Jul 14, 2008
448
70
from Appleinsider, 1 external display:

Thank you. Cancelled my order this AM because of this one.
 
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NT1440

macrumors Pentium
May 18, 2008
15,092
22,158
So my understanding is it CAN drive two external monitors as long as the built in display is off (clamshell mode).

Don’t know if that helps in your workflow or not but it’s important to note.

Edit: idk WTF is going on with the quote feature
 
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