Plugged, USBMS
Code:
[762053.780020] usb 2-4: new high-speed USB device number 18 using ehci-pci
[762053.916089] usb-storage 2-4:1.0: USB Mass Storage device detected
[762053.916135] scsi10 : usb-storage 2-4:1.0
[762054.920348] scsi 10:0:0:0: Direct-Access Kindle Internal Storage 0100 PQ: 0 ANSI: 2
[762054.929211] sd 10:0:0:0: [sde] Attached SCSI removable disk
[762057.190338] sd 10:0:0:0: [sde] 6754304 512-byte logical blocks: (3.45 GB/3.22 GiB)
[762057.411337] sd 10:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[762057.634235] sde: sde1
Eject
Code:
[762187.509236] sde: detected capacity change from 3458203648 to 0
Unplug
Code:
[762221.454887] usb 2-4: USB disconnect, device number 18
Plugged, USBnet
Code:
[762265.939015] usb 2-4: new high-speed USB device number 19 using ehci-pci
[762266.075191] cdc_ether 2-4:1.0 usb0: register 'cdc_ether' at usb-0000:00:1d.7-4, CDC Ethernet Device, ee:49:00:11:08:4d
Note that my kernel is way less verbose because it's not built with verbose/debug USB output (which happens to be the default for a lot of binary distro (i.e. Ubuntu)). [And also potentially worded differently because it's newer].
So, yeah, see if you can spot usb-storage detecting a disk... Barring that, what happens right after the detection of a new USB device.