Score:1

Fingerprint reader invoked for login but not for sudo

cn flag
  • Ubuntu 22.04.2 LTS
  • Framework 13

I have enabled the fingerprint reader in Settings→Users and it is invoked whenever I start the laptop, but it is not asked for in Terminal when I am using sudo or whenever the Ubuntu pop-up window asks for authentication. I have changed my keyring pw to null, and in a previous installation of Ubuntu sudo did direct me to use the FP reader. Any clues of what I should look for?

  • Host: Laptop AB
  • BIOS: INSYDE Corp. 3.17 (10/27/2022)
  • OS: Ubuntu 22.04.2 LTS x86_64
  • DE: GNOME 42.5 (wayland)
  • Kernel: Linux 5.19.0-41-generic
  • Shell: bash 5.1.16
  • WM: Mutter
  • CPU: 11th Gen Intel i7-1165G7 (8) @ 4.7GHz
  • GPU: Intel TigerLake-LP GT2 [Iris Xe Graphics]
  • GPU Driver: i915
  • Memory: 4.23 GiB / 15.41 GiB (27%)
  • Disk (/): 13G / 228G (6%)
  • Network: Wifi6
  • Bluetooth: Intel Corp. AX210
Score:0
cn flag

I found that the answer involves configuring PAM, but as I am not much good at coding I kept digging for an easier answer and I think I found it in this article: https://forty.sh/posts/2021-02-19-enabling-fingerprint-authentication/

The solution is to issue this command, I have no idea why or how it works, at least it worked for me:

sudo pam-auth-update --enable fprintd

I sit in a Tesla and translated this thread with Ai:

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