SteveT:
...
> By the way, how did you detect insertion? Were you using dmesg
> --follow ?
...

I usually detect insertion via my nervous system connecting to the tip
of my fingers, they detect the end stop or click that usually uccurs
when the device is fully inserted.

This detection system then calls the device_inserted() callback usually
available during my awake hours and is denied when when I sleep.

Regards,
/Karl Hammar