щодо dmesg...
xsane
[ 1052.480119] usb 2-4: new high speed USB device using ehci_hcd and address 3
[ 1052.614614] usb 2-4: configuration #1 chosen from 1 choice
[ 1052.615804] usb 2-4: New USB device found, idVendor=04a9, idProduct=1721
[ 1052.615811] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1052.615815] usb 2-4: Product: MP210 series
[ 1052.615817] usb 2-4: Manufacturer: Canon
[ 1052.615819] usb 2-4: SerialNumber: 91662B
[ 1052.790106] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04A9 pid 0x1721
[ 1052.790135] usbcore: registered new interface driver usblp
[ 1072.750038] usb 2-4: usbfs: interface 1 claimed by usblp while 'xsane' sets config #1
[ 1072.799502] ppdev0: registered pardevice
[ 1072.799679] ppdev0: unregistered pardevice
[ 1074.255830] usb 2-4: usbfs: interface 1 claimed by usblp while 'xsane' sets config #1
[ 1074.257868] usb 2-4: usbfs: interface 1 claimed by usblp while 'xsane' sets config #1
[ 1092.687006] ehci_hcd 0000:00:02.1: HC died; cleaning up
[ 1092.687021] usb 2-4: USB disconnect, address 3
[ 1092.687363] usblp0: removed
virtualbox
[ 3468.496030] usb 2-4: new high speed USB device using ehci_hcd and address 3
[ 3468.630330] usb 2-4: configuration #1 chosen from 1 choice
[ 3468.631522] usb 2-4: New USB device found, idVendor=04a9, idProduct=1721
[ 3468.631530] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3468.631533] usb 2-4: Product: MP210 series
[ 3468.631535] usb 2-4: Manufacturer: Canon
[ 3468.631537] usb 2-4: SerialNumber: 91662B
[ 3468.793075] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04A9 pid 0x1721
[ 3468.793107] usbcore: registered new interface driver usblp
[ 3729.753622] usblp0: removed
[ 3731.034803] usb 2-4: USB disconnect, address 3
vmware
[ 202.284037] usb 2-4: new high speed USB device using ehci_hcd and address 3
[ 202.418057] usb 2-4: configuration #1 chosen from 1 choice
[ 202.418708] usb 2-4: New USB device found, idVendor=04a9, idProduct=1721
[ 202.418713] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 202.418716] usb 2-4: Product: MP210 series
[ 202.418718] usb 2-4: Manufacturer: Canon
[ 202.418720] usb 2-4: SerialNumber: 91662B
[ 202.680886] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04A9 pid 0x1721
[ 202.680918] usbcore: registered new interface driver usblp
[ 291.308935] usblp0: removed
[ 291.692024] usb 2-4: reset high speed USB device using ehci_hcd and address 3
[ 292.056024] usb 2-4: reset high speed USB device using ehci_hcd and address 3
[ 303.246593] usb 2-4: USB disconnect, address 3