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Old 01-15-2022, 06:14 PM   #1
myn
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Default BUG: External Monitors Don't Sleep While In ClamShell Mode

Background:

While in clamshell mode (Lid closed, power plugged in) and connected to a Dell D3100 DisplayLink dock the external monitors do not acknowledge any sleep commands. However if not in clamshell mode (Laptop Monitor is opened) the internal and external monitors observe the sleep command

Reproduced on:
  • 2018 15" MacBook Pro (Intel)
  • MacOS 12.1
  • DisplayLink Driver 1.6
  • Dell D3100 Dock
  • 3 HP E223 External Monitors


Steps To Reproduce Bug While In ClamShell Mode:
  1. Put MacBook into Clamshell mode (Lid closed, power plugged in) and connect to DisplayLink Dock connected to multiple external monitors.
  2. Run Terminal and issue the command "pmset displaysleepnow"

    Observe no external monitors sleeping.


Steps To Validate Functionality Working As Expected While Not Clamshell Mode:
  1. Take MacBook out of Clamshell mode by lifting lid so Internal Display is also on
  2. Run Terminal and issue the command "pmset displaysleepnow"

    Observe all monitors (Internal and External) going to sleep.

Last edited by myn; 01-27-2022 at 01:40 PM.
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Old 01-27-2022, 03:51 AM   #2
myn
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FYI. Upgraded to Mac OS 12.2 tonight and the bug persists.
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Old 03-15-2022, 12:01 AM   #3
myn
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FYI Bug still exists with Monterey 12.3 and DisplayLink 1.6.1
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Old 07-16-2022, 07:19 PM   #4
myn
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Bug still persistent in Monterey 12.4 with latest DisplayLink driver 1.7.1
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Old 10-22-2022, 01:18 PM   #5
Setiawan
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Iíve been experiencing this exact issue. MacOS Monterey, Dell D3100 docking station. Monitors simply do not go to sleep like they do when plugged directly into the MacBook. Doesnít go to sleep when the MacBook is left idle for the configured sleep time, nor with the pmset command OP mentioned. The only way Iíve found to get the monitors to sleep is to manually lock the machine (Control + cmd + Q) and then Escape.

Not an issue when plugged into a Windows machine.

Are there any plans to look into this?
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Old 01-28-2023, 04:59 AM   #6
xonefs
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had to register just for this as it's getting pretty annoying

macbook air m1

ventura 13.0.1 and latest displaylink and I have the same issue

closing the lid the two displaylink external monitors turn off for a minute then they come back on
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Old 02-08-2023, 02:45 PM   #7
myn
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Quote:
Originally Posted by xonefs View Post
had to register just for this as it's getting pretty annoying

macbook air m1

ventura 13.0.1 and latest displaylink and I have the same issue

closing the lid the two displaylink external monitors turn off for a minute then they come back on
Can also confirm same issue exists still on Ventura 13.2, latest displaylink driver on an Intel Mac too.
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Old 02-09-2023, 12:06 PM   #8
rboerner
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Quote:
Originally Posted by myn View Post
Can also confirm same issue exists still on Ventura 13.2, latest displaylink driver on an Intel Mac too.
Does the information in this knowledge base article help? --> https://support.displaylink.com/know...eep-on-display
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