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View Full Version : BUG: External Monitors Don't Sleep While In ClamShell Mode

myn
01-15-2022, 05:14 PM
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:

Put MacBook into Clamshell mode (Lid closed, power plugged in) and connect to DisplayLink Dock connected to multiple external monitors.

Run Terminal and issue the command "pmset displaysleepnow"

Observe no external monitors sleeping.



Steps To Validate Functionality Working As Expected While Not Clamshell Mode:


Take MacBook out of Clamshell mode by lifting lid so Internal Display is also on

Run Terminal and issue the command "pmset displaysleepnow"

Observe all monitors (Internal and External) going to sleep.
myn
01-27-2022, 02:51 AM
FYI. Upgraded to Mac OS 12.2 tonight and the bug persists.
myn
03-14-2022, 11:01 PM
FYI Bug still exists with Monterey 12.3 and DisplayLink 1.6.1 :(
myn
07-16-2022, 06:19 PM
Bug still persistent in Monterey 12.4 with latest DisplayLink driver 1.7.1 :(
Setiawan
10-22-2022, 12:18 PM
I’ve 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. Doesn’t go to sleep when the MacBook is left idle for the configured sleep time, nor with the pmset command OP mentioned. The only way I’ve 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?
xonefs
01-28-2023, 03:59 AM
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
myn
02-08-2023, 01:45 PM
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.
rboerner
02-09-2023, 11:06 AM
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/knowledgebase/articles/1990267-displaylink-manager-app-system-sleep-on-display