The device in question is this one:
Bus 005 Device 015: ID 0483:572b STMicroelectronics STEVAL-USBC2DP Type-C to
DisplayPort adapter. It is a USB-C alternate mode device (so tbtadm does not
report it).
That adapter is connected to a screen (and working) and to a USB-C port on
a Lenovo TB3 dock [40AN] which in turn is connected to a Thinkpad X13 Gen3's
USB-C port. The Thinkpad is running lk 6.6.0-rc1 with "lsusb (usbutils) 014".
The strange thing is that this device is nowhere to be found in the output
of "lsusb -t". The lsusb manpage describes the '-t' option as: "Tells
lsusb to dump the physical USB device hierarchy as a tree." So is 'physical'
a weasel word in this context, or is there a bug in the '-t' option, or is
there some other explanation?
Doug Gilbert
