Dell WD19S Dock: USB Hub / Display / RJ45 not working

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Hello,

I am experiencing an issue with a Dell WD19S dock (usb C) that charges my laptop but does not recognize the USB hub, RJ45, or the additional display.

The dock works fine under Windows. It also worked under Linux, but only for a short time. It worked under Ubuntu LTS 22.04 and also worked with a fresh installation of the latest Linux Mint. However, after each Linux update, the dock stopped working.

I am looking for a way to make the dock work fully and stably. I’ve asked ChatGPT quite a bit and read through forums, but I haven’t found any solutions yet.

Thank you in advance if you can help.

Current Ubuntu version: 24.4.4 LTS desktop (freshly installed and up to date)
Kernel version: 6.17.0-19-generic
Dock: Dell WD19S
PC: Dell XPS 9550

Let me know if you’d like any adjustments!

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Do you have any idea please ?

3

looks like that dock isn’t supported by Dell for anything beyond Ubuntu 18.04 LTS. Have you run firmware/bios updates on it?

If so, could you run lsusb -t and paste that output here?

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Have you tried non Debian based distributions like Fedora, as a test? Might be worth a look

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I’ve seen similar regressions with the WD19S on newer kernels. Since it works initially and then drops after updates, it’s likely a Power Management or firmware mismatch issue.

First, try updating the dock’s firmware directly from your terminal:

fwupdmgr get-updates

fwupdmgr update

If that doesn’t help, try disabling autosuspend for the USB controller. You can test this by adding usbcore.autosuspend=-1 to your GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then run sudo update-grub and reboot.

Also, check if bolt is managing the device. Run boltctl list to see if the dock needs to be authorized.

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