unable to use USB ports with R4.0.1-rc1 on X1 Carbon 6th

[qubes...@riseup.net]

Hi,

do you have any debugging hints to get USB ports working
either in sys-usb or in dom0 on an X1 carbon 6th generation?

the default sys-usb config does not work (usb functionality not available in VM)

then I tried to get it to work in dom0 by unassigning the devices from the sys-usb VM
and rebooting but with no success.

I updated to the bios version 1.34 released in November 2018.

thanks!