its all about drivers now maybe have a look at https://sourceforge.net/p/bcusdk/patches/2/
then try to install knxd to route the bus onto ip overall not all usb interfaces are linux compatible and i also had mixed results
https://github.com/knxd/knxd
sometimes usb interface show up as ttyACM0
now try to follow this tread aswell
https://community.openhab.org/t/knx-usb-interface-issue-device/134752/11