The original post: /r/ubuntu by /u/explanations02 on 2025-03-13 07:44:03.

Hi everyone,

I’m using a Dell D6000 docking station with Ubuntu 24.04 on a Lenovo ThinkPad X1, and I’ve been experiencing random disconnects once a day. When this happens:

  • My external monitors (connected via DisplayPort) and USB peripherals disconnect for a few seconds.
  • The dock reconnects automatically, but this interrupts my workflow.

I checked syslog and see the following pattern when the issue occurs:

usb 4-1: USB disconnect, device number X  
usb 4-1.1: USB disconnect, device number Y  
usb 4-1.2: USB disconnect, device number Z  
usb 4-1: new SuperSpeed USB device number N using xhci_hcd  
usb 4-1: New USB device found, idVendor=05e3, idProduct=0620  
usb 4-1: Product: USB3.1 Hub  
usb 4-1: Manufacturer: GenesysLogic  
hub 4-1:1.0: USB hub found  
hub 4-1:1.0: 4 ports detected  
systemd[1]: Stopping displaylink-driver.service - DisplayLink Driver Service...

It looks like the dock temporarily loses power or connection, which also causes the DisplayLink service to stop.

What I’ve Tried So Far:

  • Checked that the dock’s power adapter is securely connected.
  • Used a different USB-C port on my laptop.
  • Swapped the USB-C cable between the dock and laptop.
  • Updated DisplayLink drivers (no improvement).

Has anyone else experienced this?

Could this be a power delivery issue, USB kernel driver bug, or DisplayLink problem or Ubuntu problem? Any suggestions on troubleshooting or fixes would be greatly appreciated!

Thanks in advance!