Hello, I have this problem too - XPS 9500, TB16. No problems using this dock with previous laptop (XPS 9550).
Some extra information that I didn't see mentioned is that USB storage connected to the dock (USB-A keyfob, USB-C Samsung T5) seem to work OK, and dock ethernet seems OK. For me, anyway. I also have a DVD-ROM plugged in that seems OK (haven't read a disc, but I can 'eject dvd' and the tray opens). For me the USB mouse is the problem - it doesn't work. Every 1 min it reconnects, works for <1 second, then stops working. Have tried front USB3, rear USB2 & USB3 ports, all have same symptoms. I'm on kernel 5.11, have updated TB16 firmware to 1.0.4. I dual-boot this system with Windows, with latest drivers/FW installed. BIOS is 1.7.1. HOpe this is helpful. I will try to assist if possible. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1922336 Title: ACPI errors and USB reset loop when hot-plugging a Titan Ridge laptop into a dock (9500, TB16) To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1922336/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
