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in part related to does Lenovo fingerprint reader work in ubuntu?

i did follow the several instructions one can find on here and elsewhere. i succeeded also in enrolling my index finger with the gui and with running pam-uth-update activated the fingerprint-reader for login or sudo commands

whenever i now boot the machine or give sudo commands i get a command shown to identify with my finger. the LED of the fingerprint-reader also SHORTLY lights up and then goes off.

SOMETIMES logging in like that works most of the times it does not work

i am sure this has to do with the led being on for short moment only.

but why?? any log to check??

btw: works fine in windows 7 so hardware is okay and lusb also shows my reader is supported by finger-print-gui

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I have a HP HDX16 with a fingerprint scanner using the Fingerprint GUI, and I've noticed that it is tougher to get it to recognize me than when I boot into Win7 on the same machine. Maybe the Fingerprint GUI is using a more strict policy for comparison. –  Namrac Jan 15 '13 at 3:29
    
yes, maybe. because in windows i never fail. but especially that the LED often goes out quickly is something i cannot understand. maybe driver related? –  Gpunkt Jan 15 '13 at 19:41
    
Are you still interested in this question? –  Seth Mar 10 at 4:28
    
for now i did give up with logging into my lubuntu with fingerprint-reader. but am open to try again to secure my system better –  Gpunkt Mar 16 at 16:04
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