A normal output should also include something like:
[26789.560701] Initializing USB Mass Storage driver...
[26789.560878] scsi6 : SCSI emulation for USB Mass Storage devices
[26789.561162] usb-storage: device found at 3
[26789.561164] usb-storage: waiting for device to settle before scanning
[26789.561171] usbcore: registered new interface driver usb-storage
[26789.561174] USB Mass Storage support registered.
[26794.561205] usb-storage: device scan complete
[26794.561792] scsi 6:0:0:0: Direct-Access Ut165 USB2FlashStorage 0.00 PQ: 0 ANSI: 2
[26794.562205] sd 6:0:0:0: Attached scsi generic sg3 type 0
[26794.562912] sd 6:0:0:0: [sdc] 3948544 512-byte logical blocks: (2.02 GB/1.88 GiB)
[26794.563404] sd 6:0:0:0: [sdc] Write Protect is off
[26794.563407] sd 6:0:0:0: [sdc] Mode Sense: 00 00 00 00
[26794.563409] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[26794.566665] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[26794.566669] sdc: sdc1
[26794.690926] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[26794.690930] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[26795.736708] ISO 9660 Extensions: Microsoft Joliet Level 3
[26795.759838] ISO 9660 Extensions: RRIP_1991A
This happens if the
usb_storage is not loaded, you can check it out with:
lsmod | grep -i usb_storage
if it shows no output then it means that the module is not loaded; load it with:
sudo modprobe usb_storage
If everything then works you can make things persistent with:
sudo sh -c 'echo usb_storage >> /etc/modules'
But I don't know why such things happen.