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Fingerprint on kUBUNTU 16.04 / No Activation of reader

Hello,
just installed Fingerprint GUI 1.08 on a Thinkpad X240, running kUBUNTU 16.04. I had no other Fingerprint GUI running earlier. I've seen the issue "KDE enviroments: The 'Fingerprint PAM' does not work for login and unlocking kscreensaver ... KDE-bugreport 105631. Due to the fact, that 16.04. is no longer using KDM or KScreenSaver, was sure to get it running.

After installation some fingers were scanned, that runs fine, incl. test procedure. Also I can start a terminal with sudo-command, the reader gets activated (green light ON) and I can proceed by scanning the finger.

After re-booting during login, the reader gets not activated, no green light. Furthermore after entering the (correct) password nothing happens and I have to edit the /etc/pam.d/common-auth in recovery-mode to de-select the fingerprint line.

Looking forward your comments and proposals.
Thanks and best regards
Michael
Permalink MichaelH 
June 30th, 2016 7:10pm
I'm sure its the same problem like in this thread:

https://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=546&Posts=7

W.U.
Permalink Wolfgang Ullrich 
June 30th, 2016 9:10pm
Thank you, Wolfgang, for the quick and precise response; obviously you're right, same KDE-bug.

But for me this is not really covered with the old issues
https://bugs.kde.org/show_bug.cgi?id=182623
https://bugs.kde.org/show_bug.cgi?id=105631

182623 is closed as duplicate to 105631;
105631 may be seen outdated, as it describes issues with KDM an KScreenSaver (ref. https://bugs.kde.org/show_bug.cgi?id=105631#c25); KDM is no longer used (ref. https://bugs.kde.org/show_bug.cgi?id=105631#c67 and further) and in 16.04 there is no screensaver at all. May be, a new bug should be reported only for the "misuse of PAM"?

I'd like to try 1.07, which obviously works for Maurizio and Jyves, ref. http://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=546#1510
I'd appreciate your hint, how "make and install 1.07 over 1.08."?

If this works and nothing is against it from your side, OK. If differences between 1.08 and 1.07 should be interesting for you, please let me know.

Otherwise I'd modify the /etc/pam.d/common-auth to disallow fingerprint after reboot, as you have already described http://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=546#1507.

Thanks a lot for your work and support.
Michael
Permalink MichaelH 
July 1st, 2016 9:51am
I'd still like to try 1.07, which obviously works for Maurizio and Jyves, ref. http://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=546#1510 but I don't know, how "make and install 1.07 over 1.08". I'd appreciate your comment very much.

Then I modified the /etc/pam.d/common-auth to disallow fingerprint after reboot, as you described http://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=546#1507. This are the results here:

Situation A,
after install both lines in common-auth active:
auth [success=2 default=ignore] pam_fingerprint-gui.so try_first_identified debug
auth [success=1 default=ignore] pam_unix.so nullok_secure try_first_pass

Fingerprint-GUI > Settings > Test PAM Service
sudo: works fine
su: works fine
gdm: greyed, not accessible
kdm: greyed, not accessible
gnome-screensaver: greyed, not accessible
lightdm: greyed, not accessible

synaptic: Authorization window appears, FP-reader green light, finger scan, green light disappears, authorization window still present, after OK-Button Synaptic shows up.

Terminal > kdesudo kate: Authorization window appears, FP-reader green light, finger scan, green light disappears, authorization OK, kate shows up.

Terminal > sudo -i: FP-reader green light, finger scan, green light disappears, authorization OK, root-shell shows up.

So far, everything as espected.

Situation B,
fingerprint-line disabled (as with situation A no log-in after reboot is possible):
# auth [success=2 default=ignore] pam_fingerprint-gui.so try_first_identified debug
auth [success=1 default=ignore] pam_unix.so nullok_secure try_first_pass

Fingerprint-GUI > Settings > Test PAM Service
sudo: "Swipe your finger", FP-reader no green light, no scanning
su: "Swipe your finger", FP-reader no green light, no scanning

Other tests (synaptic, Terminal > kdesudo kate, Terminal > sudo -i) same behaviour: no green light, no scanning

This means: With situation B no fingerprint-reader activation with kUBUNTU 16.04.

Thanks for reading and any hint to get this improved.
Michael
Permalink MichaelH 
July 2nd, 2016 7:24pm
I've tried 1.07 now and can confirm, that it behaves better.

1. Downloaded fingerprint-gui_1.07 and policykit from https://launchpad.net/~fingerprint/+archive/ubuntu/fingerprint-gui/+builds?build_text=&build_state=built for my AMD64 / xenial - system.

2. sudo apt-get remove fingerprint-gui; I was surprised, that polkit-kde-1 is installed all time.

3. Installed the .deb-files from 1.) with Situation A, e.g. both lines in /etc/pam.d/common-auth active:
auth [success=2 default=ignore] pam_fingerprint-gui.so try_first_identified debug
auth [success=1 default=ignore] pam_unix.so nullok_secure try_first_pass

4. Test results:
Same as posted on July 2nd, 2016 7:24pm. _BUT_: After booting LogIn works by entering the password. The fingerprint reader is not activated (no green light).

5. Update, e.g. back to 1.08. Situation A, both lines active.

6. Test results:
Fingerprint works for su / sudo and synaptic. After booting fingerprint reader is not activated (no green light). After entering the password, the fields are greyed, nothing happens.

7. Modified /etc/pam.d/common-auth to Situation B, e.g.:
# auth [success=2 default=ignore] pam_fingerprint-gui.so try_first_identified debug
auth [success=1 default=ignore] pam_unix.so nullok_secure try_first_pass

8. Test results:
Same as described for Situation B in my post on July 2nd, 2016 7:24pm.
Permalink MichaelH 
July 3rd, 2016 1:41pm

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