Triple 4k dock shorts out intermittently

mossyflossy · 01-08-2026, 03:05 PM

Hi-

For around 3 years, I've owned a Plugable USB-C Triple 4K Monitor Docking Station with 100W Laptop Charging. I use this to connect my Mac mini M1 (On Tahoe 26.01) to 3 display monitors - two 24" connected (one connected via hdmi-hdmi, the other one connected via DVI-hdmi) and one 32" connected via hdmi-hdmi), as well as connecting a few usb-based devices (webcam, external drive). I have my mac/monitors plugged into a power conditioning power strip. My displaylink software version is current (14.2.0)

Over a recent 4-5 month span, my monitors will occasionally (once every 2 days) go blank and then come back 10-15 seconds later. That's not entirely true- one monitor stays active with windows from other monitors gathering. They return to their original monitor location once the refresh is complete. Additionally, the webcam will also short out when the monitor refresh happens. The webcam does not come back after the monitor refresh, and requires a mac restart to come back again. External drive comes back fine.

I've read about similar displaylink scenarios regarding monitors blanking/resetting, with the suggested resolution of reverting to software v9. However, with the additional issue of the webcam not resetting, I'm wondering if it's a hardware related issue.

Has anyone encountered similar behavior and discovered a fix? If DisplayLink staff are also reviewing these posts, I'd appreciate any of your input.

Thanks.

Szymon · 01-09-2026, 08:13 AM

Hi mossyflossy,

The fact you lose all functions including a web cam suggests that USB connection between your Mac and dock drops. Are you able to replace USB cable or try to connect to a different port in your Mac?

Regards
Szymon

Display Link User · 01-09-2026, 09:50 PM

TLDR: You're not alone, and I'll post a fix if I find one.

Hiya!

I'm experiencing the same issue!

I can't remember which version this started with, but at least once a week, I encounter the same problem you're describing. I'm sharing this because I just experienced it again, and it's enough to motivate me to investigate further.

I have a setup similar to the one you described. I have three LG 4K monitors with a TOTU Upgraded USB-C 4K Triple Display Docking Station.

I'll keep exploring and testing different solutions. If I find a fix, I'll post it here.

Quote:

Originally Posted by mossyflossy

Hi-

For around 3 years, I've owned a Plugable USB-C Triple 4K Monitor Docking Station with 100W Laptop Charging. I use this to connect my Mac mini M1 (On Tahoe 26.01) to 3 display monitors - two 24" connected (one connected via hdmi-hdmi, the other one connected via DVI-hdmi) and one 32" connected via hdmi-hdmi), as well as connecting a few usb-based devices (webcam, external drive). I have my mac/monitors plugged into a power conditioning power strip. My displaylink software version is current (14.2.0)

Over a recent 4-5 month span, my monitors will occasionally (once every 2 days) go blank and then come back 10-15 seconds later. That's not entirely true- one monitor stays active with windows from other monitors gathering. They return to their original monitor location once the refresh is complete. Additionally, the webcam will also short out when the monitor refresh happens. The webcam does not come back after the monitor refresh, and requires a mac restart to come back again. External drive comes back fine.

I've read about similar displaylink scenarios regarding monitors blanking/resetting, with the suggested resolution of reverting to software v9. However, with the additional issue of the webcam not resetting, I'm wondering if it's a hardware related issue.

Has anyone encountered similar behavior and discovered a fix? If DisplayLink staff are also reviewing these posts, I'd appreciate any of your input.

Thanks.

rboerner · 01-12-2026, 12:12 PM

Quote:

Originally Posted by mossyflossy

Hi-

For around 3 years, I've owned a Plugable USB-C Triple 4K Monitor Docking Station with 100W Laptop Charging.

If you have not done so already, I would suggest contacting Plugable directly for assistance --> https://plugable.com/pages/support

Ronot · 01-13-2026, 03:01 PM

I'm having intermittent issues too :-(

I'm using a Macbook 16 M3 Pro with 1 HD monitor connected directly to the HDMI port of the Macbook and a Dell D6000 dock to drive 2 HD monitors.

Since december I'm having issues at least 4x a day where the 2 HD monitors connected to the D6000 go dark for about 10 seconds.

01-08-2026, 03:05 PM	#1
mossyflossy Junior Member Join Date: Jan 2026 Posts: 1	Triple 4k dock shorts out intermittently Hi- For around 3 years, I've owned a Plugable USB-C Triple 4K Monitor Docking Station with 100W Laptop Charging. I use this to connect my Mac mini M1 (On Tahoe 26.01) to 3 display monitors - two 24" connected (one connected via hdmi-hdmi, the other one connected via DVI-hdmi) and one 32" connected via hdmi-hdmi), as well as connecting a few usb-based devices (webcam, external drive). I have my mac/monitors plugged into a power conditioning power strip. My displaylink software version is current (14.2.0) Over a recent 4-5 month span, my monitors will occasionally (once every 2 days) go blank and then come back 10-15 seconds later. That's not entirely true- one monitor stays active with windows from other monitors gathering. They return to their original monitor location once the refresh is complete. Additionally, the webcam will also short out when the monitor refresh happens. The webcam does not come back after the monitor refresh, and requires a mac restart to come back again. External drive comes back fine. I've read about similar displaylink scenarios regarding monitors blanking/resetting, with the suggested resolution of reverting to software v9. However, with the additional issue of the webcam not resetting, I'm wondering if it's a hardware related issue. Has anyone encountered similar behavior and discovered a fix? If DisplayLink staff are also reviewing these posts, I'd appreciate any of your input. Thanks.

01-09-2026, 08:13 AM	#2
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 193	Hi mossyflossy, The fact you lose all functions including a web cam suggests that USB connection between your Mac and dock drops. Are you able to replace USB cable or try to connect to a different port in your Mac? Regards Szymon

01-13-2026, 03:01 PM	#5
Ronot Junior Member Join Date: Apr 2022 Posts: 5	I'm having intermittent issues too :-( I'm using a Macbook 16 M3 Pro with 1 HD monitor connected directly to the HDMI port of the Macbook and a Dell D6000 dock to drive 2 HD monitors. Since december I'm having issues at least 4x a day where the 2 HD monitors connected to the D6000 go dark for about 10 seconds.