Big Sur Clamshell mode

yoshi · 12-23-2020, 06:32 PM

I was running into the issue of not being able to run clamshell mode in Big Sur. I seemed to have fixed it by running:

sudo pmset -a disablesleep 1

and entering my password.

To stop sleep entirely:
sudo pmset -a disablesleep 1

To revert, allowing sleep again:
sudo pmset -a disablesleep 0

Hope this helps some people

pecham202020 · 12-24-2020, 04:43 AM

Another way to have clamshell mode work is to have 1 display cable go directly to the Mac (or some dongle), and then the other display cables connect to the DisplayLink hub.

For example, I use a TB3 cable to connect directly to a display via the Mac TB3 port, and then 2 DP cables to connect to the other two displays via the hub.

12-23-2020, 06:32 PM	#1
yoshi Junior Member Join Date: Dec 2020 Posts: 1	Big Sur Clamshell mode I was running into the issue of not being able to run clamshell mode in Big Sur. I seemed to have fixed it by running: sudo pmset -a disablesleep 1 and entering my password. To stop sleep entirely: sudo pmset -a disablesleep 1 To revert, allowing sleep again: sudo pmset -a disablesleep 0 Hope this helps some people

12-24-2020, 04:43 AM	#2
pecham202020 Junior Member Join Date: Dec 2020 Posts: 8	Another method Another way to have clamshell mode work is to have 1 display cable go directly to the Mac (or some dongle), and then the other display cables connect to the DisplayLink hub. For example, I use a TB3 cable to connect directly to a display via the Mac TB3 port, and then 2 DP cables to connect to the other two displays via the hub.