I now realize that the main problem maybe is in the device
/dev/usb/legousbtower0, which is created
when plugging in the IR-tower.
Jul 22 11:53:03 Sietses-PC kernel: [137264.570103] usb 1-9: new low-speed USB
device number 16 using xhci_hcd
Jul 22 11:53:03 Sietses-PC kernel: [137264.733637] usb 1-9: New USB device
found, idVendor=0694, idProduct=0001, bcdDevice= 1.00
Jul 22 11:53:03 Sietses-PC kernel: [137264.733642] usb 1-9: New USB device
strings: Mfr=4, Product=26, SerialNumber=0
Jul 22 11:53:03 Sietses-PC kernel: [137264.733644] usb 1-9: Product: LEGO USB
Tower
Jul 22 11:53:03 Sietses-PC kernel: [137264.733646] usb 1-9: Manufacturer: LEGO
Group
Jul 22 11:53:03 Sietses-PC kernel: [137264.736315] legousbtower 1-9:1.0: LEGO
USB Tower firmware version is 1.0 build 134
Jul 22 11:53:03 Sietses-PC kernel: [137264.736490] legousbtower 1-9:1.0: LEGO
USB Tower #-160 now attached to major 180 minor 0
Jul 22 11:53:03 Sietses-PC mtp-probe: checking bus 1, device 16:
"/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9"
Jul 22 11:53:03 Sietses-PC mtp-probe: bus: 1, device: 16 was not an MTP device
Jul 22 11:53:03 Sietses-PC mtp-probe: checking bus 1, device 16:
"/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9"
Jul 22 11:53:03 Sietses-PC mtp-probe: bus: 1, device: 16 was not an MTP device
But I assume that it used to word, 15 years ago, so what is changed?
Further the package brickos with command firmdl3 works just fine, so I assume
that the hardware is ok.