On Wed, Jan 11, 2023 at 11:38:02AM +0100, Christian Schaubschläger wrote: > Hi, > > Okay thanks for checking. I'm discussing with our Windows folks if there > > is something done differently in Windows side. They do similar reset in > > certain flows but I'm not sure if it is exactly on "reboot" and it is > > not clear whether Windows and Linux "reboot" in general is doing the > > same thing either. > > > > In the meantime, did we try this already? > > > > 0. Drop all kernel changes > > 1. Boot the system up, nothing connected > > 2. Plug in the dock > > 3. Check that it works (lspci etc.) > > 4. Unload the Thunderbolt driver > > > > # rmmod thunderbolt > > > > 5. Reboot the system > > I think we did not try this one so far. But I did now -> same result... Okay :( > What I _did_ find out is this: if I disable ACPI on the kernel command > line (acpi=off), things work fine. I can even boot with the dock > unplugged, then plug it when linux is up, and it works in linux, and > also after the reboot in the firmware! > > Of course switching off ACPI is not a real option... but maybe this > brings some light into the dark... It pretty much disables a lot of functionality so I don't think it helps here, unfortunately.