Fingerprint reader: Enrollment works, verification fails

Support
1

Hi everyone, I managed to get my Thinkpad T480s’s fingerprint reader “ID 06cb:009a Synaptics, Inc. Metallica MIS Touch Fingerprint Reader” working via python-validity. I can now enroll my fingerprint:

$ fprintd-enroll      
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

However, verification always fails:

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

I’ve tried enrollment and verification multiple times. I’ve already opened an issue on python-validity’s Github, but I’m nor sure whether or not the problem might actually be on my side. The same fingerprint reader worked fine with Windows 10 on this Laptop.

Any ideas?

2

Did you add an entry like this

auth sufficient pam_fprintd.so

to /etc/pam.d/sddm if you are using sddm, adapt as you must.

3

I can confirm that this doesn’t fix the problem.

My experience was that Manjaro Gnome comes with fingerprint authentication broken out of the box.

4

From the terminal I can enrol a fingerprint using:

fprintd-enroll 1  1 ✘
Using device /net/reactivated/Fprint/Device/0
Enrolling right-index-finger finger.
Enroll result: enroll-stage-passed
Enroll result: enroll-swipe-too-short
Enroll result: enroll-remove-and-retry
Enroll result: enroll-stage-passed
Enroll result: enroll-completed

But when I go to verify it (for some reason it asks for admin privileges to do the verification):

sudo fprintd-verify 1  :heavy_check_mark:  11s 
Swipe your right middle finger across the fingerprint reader
[sudo] password for doomicle:
Using device /net/reactivated/Fprint/Device/0
Listing enrolled fingers:

  • #0: right-index-finger
    Verify started!
    Verifying: right-index-finger
    Verify result: verify-disconnected (done)

It simply states verify-disconnected without giving me any time to scan my finger.

For someone experienced in coding, the functionality for that seems to be here:

Is fprintd broken? Is there something wrong in the way my Manjaro is configured which is preventing it from verifying properly?
What’s the deal?

5

Any updates the same problem on Acer Swift 1 - success enrollment but verify problems after that