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"Allow discharge" deactivates Thunderbolt display when in clamshell mode #78

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opened 2025-12-30 01:33:20 +01:00 by adam · 5 comments
adam commented 2025-12-30 01:33:20 +01:00
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Originally created by @marcoduering on GitHub (Feb 18, 2021).

Hi!

I know this feature is in development, just providing feedback:

When I enable "Allow discharge (Beta)" while in clamshell mode with external display (via Thunderbolt, also charging via the display), the external display goes dark. This does not happen when using both the internal and the external display simultaneously.

Macbook Air M1
macOS 11.2.1
AlDente 2.1 alpha
LG Ultrafine 5K, connected via Thunderbolt
Charging via LG 5K

Originally created by @marcoduering on GitHub (Feb 18, 2021). Hi! I know this feature is in development, just providing feedback: When I enable "Allow discharge (Beta)" while in clamshell mode with external display (via Thunderbolt, also charging via the display), the external display goes dark. This does not happen when using both the internal and the external display simultaneously. Macbook Air M1 macOS 11.2.1 AlDente 2.1 alpha LG Ultrafine 5K, connected via Thunderbolt Charging via LG 5K
adam closed this issue 2025-12-30 01:33:20 +01:00
adam commented 2025-12-30 01:33:21 +01:00
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@paoloestar commented on GitHub (Feb 19, 2021):

same here with comparable setup

@paoloestar commented on GitHub (Feb 19, 2021): same here with comparable setup
adam commented 2025-12-30 01:33:21 +01:00
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@davidwernhart commented on GitHub (Feb 19, 2021):

Hey guys!
I am aware of this issue. Sadly, as of now there is nothing I can do about it, since this seems to be a hardware limitation when telling the system to soft-disconnect the charger.
I have already mentioned this on the release-page for 2.1 alpha, but I should probably display this information somewhere more prominently.

Best regards,
David

@davidwernhart commented on GitHub (Feb 19, 2021): Hey guys! I am aware of this issue. Sadly, as of now there is nothing I can do about it, since this seems to be a hardware limitation when telling the system to soft-disconnect the charger. I have already mentioned this on the release-page for 2.1 alpha, but I should probably display this information somewhere more prominently. Best regards, David
adam commented 2025-12-30 01:33:21 +01:00
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@marcoduering commented on GitHub (Feb 19, 2021):

Thanks a lot for your feedback. Shame on me for not reading the release notes! Sorry! Closing this issue

@marcoduering commented on GitHub (Feb 19, 2021): Thanks a lot for your feedback. Shame on me for not reading the release notes! Sorry! Closing this issue
adam commented 2025-12-30 01:33:21 +01:00
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@jamesdbailey commented on GitHub (Feb 21, 2021):

When in clamshell you should try: sudo pmset disablesleep 1

@jamesdbailey commented on GitHub (Feb 21, 2021): When in clamshell you should try: sudo pmset disablesleep 1
adam commented 2025-12-30 01:33:21 +01:00
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@pschopen commented on GitHub (Mar 8, 2021):

Just came across an app called amphetamine that prevents MacBooks from falling into sleep mode when closed. Integrating such functionality into aldente could solve the issue?

@pschopen commented on GitHub (Mar 8, 2021): Just came across an app called amphetamine that prevents MacBooks from falling into sleep mode when closed. Integrating such functionality into aldente could solve the issue?
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Reference: starred/AlDente-Battery_Care_and_Monitoring#78