Fast loop fprint auth to simulate simultaneous nonblocking logins with passwd auth#884
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vjr wants to merge 3 commits into
Open
Fast loop fprint auth to simulate simultaneous nonblocking logins with passwd auth#884vjr wants to merge 3 commits into
vjr wants to merge 3 commits into
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vjr
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Promising workaround to enable (simulate) fprint login to work "simultaneously" with passwd login without one "blocking" the other.
Requires the following line added at the top of
/etc/pam.d/lightdmbut this branch works (passwd-only login) without it. This file is owned by thelightdmpackage not elementary OS so unsure how or where to add this in code/config/packaging or just leave it to users to add it themselves:auth sufficient pam_fprintd.so max-tries=1 timeout=1Note in Ubuntu 24.04 LTS (elementary OS v8) the fprintd timeout is minimum 10 seconds which seems to be fixed/works in Ubuntu 26.04 LTS (for elementary OS v9) which means in os8 when a user enters password has to wait up to 10 seconds before login happens but in os9 likely wait for a maximum of 1 second.
Needs some testing on Ubuntu 26.04 LTS to validate this short timeout does not cause fprint to fail due to insufficient duration for the device to verify a fingerprint!
edit: Tested builtin fprint reader on laptop and a USB reader and fprint verification works with this lowered 1-second timeout.
Fixes #502
Addresses #868
Addresses #738
Addresses #494