Ну мало ли что могло быть... другие контроллеры (маловероятно), кабель с примитивным встроенным устройством для передачи данных (более вероятно). Попробуй этот же кабель между оффтопиками.
[ 4232.828021] usb 2-2: new full speed USB device using ohci_hcd and address 3
[ 4233.008023] usb 2-2: device descriptor read/64, error -32
[ 4233.292021] usb 2-2: device descriptor read/64, error -32
[ 4233.572017] usb 2-2: new full speed USB device using ohci_hcd and address 4
[ 4233.752017] usb 2-2: device descriptor read/64, error -32
[ 4234.036066] usb 2-2: device descriptor read/64, error -32
[ 4234.316023] usb 2-2: new full speed USB device using ohci_hcd and address 5
[ 4244.724020] usb 2-2: device not accepting address 5, error -110
[ 4244.900022] usb 2-2: new full speed USB device using ohci_hcd and address 6
[ 4244.939766] usb 2-2: New USB device found, idVendor=05e3, idProduct=0501
[ 4244.939772] usb 2-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 4244.939775] usb 2-2: Product: USB Host To Host Bridge
[ 4244.939867] usb 2-2: configuration #1 chosen from 1 choice
[ 5711.286318] nautilus[4770]: segfault at b69c6be0 ip b69c6be0 sp bfd4d7cc error 4 in de9486f0b47a4d768a594cb4198cb1c6-x86.cache-2[b6af8000+2000]
[ 6062.284024] usb 1-1: new high speed USB device using ehci_hcd and address 4
[ 6062.453989] usb 1-1: New USB device found, idVendor=058f, idProduct=6387
[ 6062.453995] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 6062.453998] usb 1-1: Product: Mass Storage Device
[ 6062.454000] usb 1-1: Manufacturer: JetFlash
[ 6062.454002] usb 1-1: SerialNumber: M7LNHPV9
[ 6062.454094] usb 1-1: configuration #1 chosen from 1 choice
[ 6062.661892] Initializing USB Mass Storage driver...
[ 6062.668128] scsi4 : SCSI emulation for USB Mass Storage devices
[ 6062.672153] usbcore: registered new interface driver usb-storage
[ 6062.672158] USB Mass Storage support registered.
[ 6062.700662] usb-storage: device found at 4
[ 6062.700667] usb-storage: waiting for device to settle before scanning
[ 6067.703983] usb-storage: device scan complete
[ 6068.080778] scsi 4:0:0:0: Direct-Access JetFlash TS4GJFV35 8.07 PQ: 0 ANSI: 2
Note that before Linux 2.6.14, the minidrivers were not split out into their own modules. With older kernels, just "modprobe usbnet" to get everything; newer kernels modprobe the minidriver, which depends on usbnet to do all the USB-specific work.