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Disable Laptop display or clamshell mode
 

Disable Laptop display or clamshell mode  

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tonyburn
(@tonyburn)
Active Member
Joined: 2 years ago
 

Hi all, apologies if this has already been discussed - I tried my best to do some searching.

I have a MBPr15 2017 with Mantiz eGPU/Radeon 580 running on High Sierra.  It really bugs me that clamshell mode does not work with the native OS/drivers provided by Apple, I despise having my laptop screen running when I have an external display plugged in.  In the past (on different hardware and OS) I have worked around this issue and 'turned off' the internal display using DisableMonitor which had been great.  Problem I have now is that this software does not seem to work with High Sierra, there are multiple issues raised by people having the same problem.

Question I have is, are there any alternatives to DisableMonitor which are known to be working to disable the laptop display?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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(@pierre-emmanuel_pardon)
Active Member
Joined: 2 years ago
 

Hello,

 

I have a MBPr 15" + Core v2 + 1070 ti + 27" monitor running on macOS 10.13.2 (17C205):

DisableMonitor 1.92 is working without problems.

My only issue is that I need to disable the internal LCD display while playing games because macOS is trying to accelerate both the internal display and the external 27" with the eGPU... awful !

Unfortunately clamshell mode doesn't disable completely the internal display as you can see above, worst the eGPU doesn't poweroff even in sleep mode. Do you have the same issues?

Regards 

Old hardware: MacBookPro11,5 (15 Retina, i7 4980HQ) dGPU R9 M370X + TB2/TB3 adapter + Razer Core v2 + GTX 1070 Ti

New hardware: Mac mini (2018, i7 8700B, 32 GB RAM, 1 TB SSD)+ Razer Core v2 eGPU + SAPPHIRE Radeon RX Vega 64 + Samsung C27HG70 display
New software: macOS 10.14.2 (18C54), Windows 10 to be tried !


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Shinra
(@shinra)
Active Member
Joined: 3 years ago
 

Hi there,

I am using SwitchResX to disable the internal display and the performance of the eGPU is back. Just be aware to tick 'Only SwitchResX can enable a disable display' to avoid auto enable.

Regards

2016 15" MacBook Pro 2016 + [email protected] (Mantiz Venus) + MacOs 10.13.2 beta // using 600W PSU


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Juan C. Yunis
(@juan_c_yunis)
Reputable Member
Joined: 2 years ago
 
Posted by: Shinra

Hi there,

I am using SwitchResX to disable the internal display and the performance of the eGPU is back. Just be aware to tick 'Only SwitchResX can enable a disable display' to avoid auto enable.

Regards

Awesome, this worked for me.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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tonyburn
(@tonyburn)
Active Member
Joined: 2 years ago
 
Posted by: Pierre-Emmanuel Pardon

Hello,

 

I have a MBPr 15" + Core v2 + 1070 ti + 27" monitor running on macOS 10.13.2 (17C205):

DisableMonitor 1.92 is working without problems.

My only issue is that I need to disable the internal LCD display while playing games because macOS is trying to accelerate both the internal display and the external 27" with the eGPU... awful !

Unfortunately clamshell mode doesn't disable completely the internal display as you can see above, worst the eGPU doesn't poweroff even in sleep mode. Do you have the same issues?

Regards 

Interesting that it's working for you on High Sierra, wonder what is unique about my setup and the other people who are facing issues with it turning off all displays when disabling only the internal one?

Thanks for that feedback.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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Juan C. Yunis
(@juan_c_yunis)
Reputable Member
Joined: 2 years ago
 
Posted by: tonyburn
Posted by: Pierre-Emmanuel Pardon

Hello,

 

I have a MBPr 15" + Core v2 + 1070 ti + 27" monitor running on macOS 10.13.2 (17C205):

DisableMonitor 1.92 is working without problems.

My only issue is that I need to disable the internal LCD display while playing games because macOS is trying to accelerate both the internal display and the external 27" with the eGPU... awful !

Unfortunately clamshell mode doesn't disable completely the internal display as you can see above, worst the eGPU doesn't poweroff even in sleep mode. Do you have the same issues?

Regards 

Interesting that it's working for you on High Sierra, wonder what is unique about my setup and the other people who are facing issues with it turning off all displays when disabling only the internal one?

Thanks for that feedback.

This used to happen to me when i was using DisableMonitor, but it gave it a shot with SwitchResX and it worked, could you try SwitchResX? if it works for you then we can confirm the app is the issue. 

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Maximus
(@maximus)
Eminent Member
Joined: 2 years ago
 

hey guys. 

I seem to NOT have this issue. I run a 15" 2017 mbp with a usb-c monitor and a 1070 gaming box. Whenever i close the lid of my laptop (osx and win10) the screen turns black for a sec, and then the monitor turns on again , after which i can use it while the laptop is in clamshell.

 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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Jared Busch
(@jared_busch)
Eminent Member
Joined: 2 years ago
 

Yup, the SwitchResX did the trick for me too! I was worried, thought this was a side effect of using an nvidia gpu with high sierra, but turns out you I just needed to disable the internal monitor! Like @shinra said make sure to "tick ‘Only SwitchResX can enable a disable display’ to avoid auto enable."

 

Then went into the menu bar icon at the top, disabled internal display labeled "Color LCD", monitor flashed black for about 30 seconds then popped back on and internal was disabled and I'm not getting performance I wasn't before....ZERO LAG!

 

Thanks guys!

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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etherealpoetry
(@etherealpoetry)
Active Member
Joined: 2 years ago
 

SwitchResX does nothing for me. (2017 15" Pro w/ 560). It blanks the internal display, but the internal display still shows as being active in the settings menu, just displays nothing. Performance is identical with and without it disabled.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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tonyburn
(@tonyburn)
Active Member
Joined: 2 years ago
 

Thanks for all the feedback, I can confirm that SwitchResX works for me as a clamshell mode workaround.  I can easily disable my laptop internal display and it does not impact my external display at all, awesome.  Well, awesome apart from the fact that I'm 14 EUR down after having to buy it :p

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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kiodos
(@kiodos)
Active Member
Joined: 2 years ago
 

Thank you for the feedback ! SwitchResX excluded the internal monitor, in the sense that the mouse can't go on the other screen...

However

On my MacookPro TB3 the back-lighting is still active, the keyboard lightning is active, the Touch Bar stay active and when you open the properties of the monitor in System Preferences, it will open the two windows corresponding of the screens.

Do you have better solutions ?

2017 13" Macbook Pro Touchbar + GTX1050Ti@32Gbps-TB3 (AKiTiO Node Lite) + macOS 10.13.15 (macOS-eGPU.sh)
Nvidia Web Drivers 387.10.10.10.30.107 + CUDA Drivers 396.64


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