[Fingerforce-devel] Bug#984924: libfprint-2-2: swipe-too-short error with 138a:0050 Validity Sensors

[Carlo Agrusti]

Package: libfprint-2-2
Version: 1:1.90.7-2
Severity: normal
Tags: patch
X-Debbugs-Cc: carlo.agrusti at gmail.com

Dear Maintainer,

when trying to enroll the fingerprint with the command fprintd-enroll, the
error "swipe-too-short" is issued, thus not allowing to complete the procedure.

By looking at the source code of libfprint it seems that the function
is_noise() into the module vfs0050.c always returns 1, so reducing to 0 the
number of valid scan lines. Avoiding the call to is_noise() leads to a properly
working system - even without any noise filtering.




-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-3-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libfprint-2-2 depends on:
ii  libc6          2.31-4
ii  libglib2.0-0   2.66.2-1
ii  libgusb2       0.3.5-1
ii  libnss3        2:3.58-1
ii  libpixman-1-0  0.36.0-1

libfprint-2-2 recommends no packages.

libfprint-2-2 suggests no packages.

-- no debconf information