Hi all,
after the boot I connect a USB key and dmesg reports correctly the USB insertion but the udev do not react even if it is triggered manually. The final result is that the related device is not created.
root@box:/etc/udev/rules.d# sleep 0.1 && (echo; udevadm trigger --attr-match=subsystem=usb) &
root@box:/etc/udev/rules.d#
KERNEL[23000.092562] change /devices/pci0000:00/0000:00:1d.0/usb1 (usb)
KERNEL[23000.092797] change /devices/pci0000:00/0000:00:1d.0/usb1/1-0:1.0 (usb)
KERNEL[23000.093013] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1 (usb)
KERNEL[23000.093199] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4 (usb)
KERNEL[23000.093383] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.1 (usb)
KERNEL[23000.093592] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.1/1-1.4.1:1.0 (usb)
KERNEL[23000.093761] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4:1.0 (usb)
KERNEL[23000.093930] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0 (usb)
UDEV [23000.094319] change /devices/pci0000:00/0000:00:1d.0/usb1 (usb)
UDEV [23000.094970] change /devices/pci0000:00/0000:00:1d.0/usb1/1-0:1.0 (usb)
UDEV [23000.097117] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1 (usb)
UDEV [23000.098125] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0 (usb)
UDEV [23000.098301] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4 (usb)
UDEV [23000.099069] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4:1.0 (usb)
UDEV [23000.099240] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.1 (usb)
UDEV [23000.105894] change /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.1/1-1.4.1:1.0 (usb)
[21243.436767] usb 1-1.4.1: new high-speed USB device number 4 using ehci-pci
[21243.555219] usb 1-1.4.1: New USB device found, idVendor=0951, idProduct=1666, bcdDevice= 0.01
[21243.555234] usb 1-1.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[21243.555245] usb 1-1.4.1: Product: DataTraveler 3.0
[21243.555255] usb 1-1.4.1: Manufacturer: Kingston
[21243.555264] usb 1-1.4.1: SerialNumber: 60A44C3FACD3FFB1C96F0088