Troubleshooting the Fingerprint scanner

asked 2018-12-23 17:02:52 +0200

Keeper-of-the-Keys
5049 ●77 ●101 ●104

updated 2018-12-25 20:27:57 +0200

My Xperia X fingerprint scanner stopped working and I'd like to trouble shoot it to figure out if it's a hardware or software issue.

I read all about the 5-print limitation here, to the best of my knowledge I did not surpass that limit before the scanner stopped working, I did attempt to enroll a finger after that which for sure was beyond 5 fingers.

As far as I can tell from systemctl the daemon seems to be working and journalctl does not show any errors.

So:

1. Can you please give a trouble-shooting procedure?

2. Is it possible to reset what fingers are enrolled?

Thanks

Update:

I used the below procedure to reset the fingerprints enrolled, I enrolled 4 fingers after which everything was working fine for a day.

Today the fingerprint sensor again stopped working

systemctl status sailfish-fpd

showed that the service had crashed, a restart did not help.

After device reboot the configuration interface listed no enrolled fingers and I was able to enroll 1 finger after which the 5+ behavior happened (unable to enroll another finger). The re-enrolled finger works while the previously enrolled fingers do not, sadly reboot means that the previous logs seem to not have been preserved as far as I can tell but next time this happens I will first get logs of the failed service.

Update 2:

Well that didn't survive long (less then 5 hours), daemon crashed after manual restart no enrolled fingers are shown.

Here are some logs:

Dec 25 19:24:27 Sailfish sailfish-fpd[1642]: mrcontrol_fphal_timeout_cb: fp hal is stuck; terminating 
Dec 25 19:24:27 Sailfish fpslave[1652]: fpcontrol_mainloop: master poll hup
Dec 25 19:24:27 Sailfish fpslave[1652]: fpdevice_quit: QUIRK: device.close() skipped
Dec 25 19:24:27 Sailfish sailfish-fpd[1642]: *** SLAVE TERMINATE
Dec 25 19:24:27 Sailfish systemd[1]: sailfish-fpd.service: Main process exited, code=exited, status=1/FAILURE
Dec 25 19:24:27 Sailfish systemd[1]: sailfish-fpd.service: Unit entered failed state.
Dec 25 19:24:27 Sailfish systemd[1]: sailfish-fpd.service: Failed with result 'exit-code'.
Dec 25 19:24:28 Sailfish systemd[1]: sailfish-fpd.service: Service hold-off time over, scheduling restart.
Dec 25 19:24:28 Sailfish systemd[1]: Stopped Fingerprint Daemon.
Dec 25 19:24:28 Sailfish systemd[1]: Starting Fingerprint Daemon...
Dec 25 19:24:28 Sailfish systemd[1]: Started Fingerprint Daemon.
Dec 25 19:24:28 Sailfish fpslave[13860]: fpmodule_open_device: module.open() -> error=-22
Dec 25 19:24:28 Sailfish fpslave[13860]: fpdevice_init: failed to open fingerprint device
Dec 25 19:24:28 Sailfish sailfish-fpd[13859]: mrcontrol_slave_rx_cb: error condition
Dec 25 19:24:28 Sailfish sailfish-fpd[13859]: mrcontrol_slave_rx_cb: disable slave io watch
Dec 25 19:24:28 Sailfish sailfish-fpd[13859]: main: sailfish-fpd terminating with exit value 1
Dec 25 19:24:28 Sailfish systemd[1]: sailfish-fpd.service: Main process exited, code=exited, status=1/FAILURE
Dec 25 19:24:28 Sailfish systemd[1]: sailfish-fpd.service: Unit entered failed state.
Dec 25 19:24:28 Sailfish systemd[1]: sailfish-fpd.service: Failed with result 'exit-code'.
Dec 25 19:24:29 Sailfish systemd[1]: sailfish-fpd.service: Service hold-off time over, scheduling restart.
Dec 25 19:24:29 Sailfish systemd[1]: Stopped Fingerprint Daemon.
Dec 25 19:24:29 Sailfish systemd[1]: Starting Fingerprint Daemon...
Dec 25 19:24:29 Sailfish systemd[1]: Started Fingerprint Daemon.
Dec 25 19:24:29 Sailfish fpslave[13866]: fpmodule_open_device: module.open() -> error=-22
Dec 25 19:24:29 Sailfish fpslave[13866]: fpdevice_init: failed to open fingerprint device
Dec 25 19:24:29 Sailfish sailfish-fpd[13864]: mrcontrol_slave_rx_cb: error condition
Dec 25 19:24:29 Sailfish sailfish-fpd[13864]: mrcontrol_slave_rx_cb: disable slave io watch
Dec 25 19:24:29 Sailfish systemd[1]: sailfish-fpd.service: Main process exited, code=exited, status=1/FAILURE
Dec 25 19:24:29 Sailfish systemd[1]: sailfish-fpd.service: Unit entered failed state.
Dec 25 19:24:29 Sailfish systemd[1]: sailfish-fpd.service: Failed with result 'exit-code'.
Dec 25 19:24:30 Sailfish systemd[1]: sailfish-fpd.service: Service hold-off time over, scheduling restart.
Dec 25 19:24:30 Sailfish systemd[1]: Stopped Fingerprint Daemon.
Dec 25 19:24:30 Sailfish systemd[1]: Starting Fingerprint Daemon...
Dec 25 19:24:30 Sailfish systemd[1]: Started Fingerprint Daemon.
Dec 25 19:24:30 Sailfish fpslave[13874]: fpmodule_open_device: module.open() -> error=-22
Dec 25 19:24:30 Sailfish fpslave[13874]: fpdevice_init: failed to open fingerprint device
Dec 25 19:24:30 Sailfish sailfish-fpd[13872]: mrcontrol_slave_rx_cb: error condition
Dec 25 19:24:30 Sailfish sailfish-fpd[13872]: mrcontrol_slave_rx_cb: disable slave io watch
Dec 25 19:24:30 Sailfish sailfish-fpd[13872]: main: sailfish-fpd terminating with exit value 1
Dec 25 19:24:30 Sailfish systemd[1]: sailfish-fpd.service: Main process exited, code=exited, status=1/FAILURE
Dec 25 19:24:30 Sailfish systemd[1]: sailfish-fpd.service: Unit entered failed state.
Dec 25 19:24:30 Sailfish systemd[1]: sailfish-fpd.service: Failed with result 'exit-code'.
Dec 25 19:24:31 Sailfish systemd[1]: sailfish-fpd.service: Service hold-off time over, scheduling restart.
Dec 25 19:24:31 Sailfish systemd[1]: sailfish-fpd.service: Start request repeated too quickly.
Dec 25 19:24:31 Sailfish systemd[1]: sailfish-fpd.service: Unit entered failed state.
Dec 25 19:24:31 Sailfish systemd[1]: sailfish-fpd.service: Failed with result 'start-limit'.

Incidentally CSD runs its' check against the sailfish-fpd daemon so I'm not sure to what extent it can truly check for a hardware issue.