Public bug reported:
I have a Lenovo Thunderbolt 3 Gen 2 dock and wanted to use this with
Ubuntu 21.10. When booting an unmodified version the usb ports do not
work. After an inspection with journalctl I find the error message "No
bus number available for hot-added bridge" and a google search led me to
this workaround: Add pci=realloc,assign-busses,hpbussize=0x33. This line
as a boot parameter makes the dock work as intended. I believe this
should be fixed so that people using the live image can see that their
hardware works as intended before installing.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: dock kernel thunderbolt
** Attachment added: "Output from lspci"
https://bugs.launchpad.net/bugs/1950780/+attachment/5540410/+files/lspci.log
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https://bugs.launchpad.net/bugs/1950780
Title:
Thunderbolt dock usb ports not working
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