Hi, (and happy new year!) >> If I just remove the module without un- and re-plugging the cable, the >> connection is not there in the firmware after the reboot. > Right because the driver leaves all the tunnels up so the boot firmware > then finds the PCIe tunnels established. So maybe it's a firmware issue? If the kernel leaves the tunnels in place, but the firmware doesn't see them? > One more experiment if you will. > > Same steps 1-3 as above but then do this: > > 4. Disconnect the PCIe tunnel directly: > > # echo 0 > /sys/bus/thunderbolt/devices/DEVICE/authorized > > (where DEVICE is typically 0-1 or 0-3 in Intel platforms) > > 5. Check in lspci that it is not visible anymore > 6. Soft boot the system. > > In other words this leaves the USB4 link and other tunnels up but not > PCIe. After echoing 0 to the 'authorized' file, the devices disappear in linux from the PCI bus, but unfortunately don't show up in the firmware after the reboot... Thanks & regards, Christian
