Geekmaster, thanks a lot for your work. I understand: different mountpoints...
but my Kindle seems to be really dead, now:
Display does not change anymore. And my Ubuntu syslog shows
Feb 7 20:21:27 zeplucidhd kernel: [ 1907.120148] usb 1-2: new high speed USB device number 16 using ehci_hcd
Feb 7 20:21:27 zeplucidhd kernel: [ 1907.255649] generic-usb: probe of 0003:15A2:0052.000D failed with error -22
Feb 7 20:21:27 zeplucidhd mtp-probe: checking bus 1, device 16: "/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-2"
Feb 7 20:21:27 zeplucidhd mtp-probe: bus: 1, device: 16 was not an MTP device
So I think i can not access USB/HID anymore. Or am i blind?