06cb:009a verify-no-match after enroll-completed

Hello everyone,

on my Thinkpad T480s running Manjaro KDE (Kernel 5.9.16), I can enroll my finger but verification then always fails. I’ve tried resetting and re-enrolling my finger multiple times.

Using device /net/reactivated/Fprint/Device/0
Enrolling right-index-finger finger.
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-completed

Using device /net/reactivated/Fprint/Device/0
Listing enrolled fingers:
 - #0: WINBIO_ANSI_381_POS_RH_INDEX_FINGER
Verify result: verify-no-match (done)

Please let me know if I need to supply more information.

[KoalaV2]

Can confirm factory reset fixed it for me, thanks!

[uunicorn]

A factory reset forces a calibration. If you put your finger/palm on the sensor during the calibration, all subsequent attempts to enroll/verify will be very unreliable. 06cb:009a device is special in a sense that calibration results are partly stored on both the device and the host. Whenever you calibrate the sensor, remember to delete /usr/share/python-validity/calib-data.bin.