Comment 123 for bug 285089

@Sergio Cerlesi
Thanks for you hard works!!

I'm working under $ uname -a
Linux Oreste 2.6.37-ARCH #1 SMP PREEMPT Fri Mar 25 15:10:00 CET 2011 x86_64 Intel(R) Core(TM)2 Duo CPU T9300 @ 2.50GHz GenuineIntel GNU/Linux
with kde-config -v
Qt: 3.3.8
KDE: 3.5.10
kde-config: 1.0

I have lsusb | grep Fingeprint
Bus 004 Device 002: ID 138a:0001 Validity Sensors, Inc. VFS101 Fingeprint Reader
(My computer is a Acer Aspire 8920G)

All dependencies required for compilation have been installed.
I downloaded: http://people.freedesktop.org/~hadess/libfprint-0.3.0.tar.bz2 and uncompressed it
I donwloaded only the second patches libfprint-0.3.0-vfs101.v5.patch

inside dir where previous tar file was uncompressed I applied the first patch:
$ patch -p1 < ../libfprint-0.3.0-vfs101.v5.patch

afterward I do everything in order
$ autoreconf && ./configure && make
$ sudo make install
$ sudo cp /usr/local/lib/libfprint.* /usr/lib64/
$ sudo cp /usr/local/lib/libfprint.* /usr/lib/

Finally I've done
$ kdesu fprint_demo

Perfect it show my finger!!
For the first time since I switch to Linux I can work with my fingersensor.
BUT
yes there's a but.
If I close fprint_demo and relaunch it it show me : Status : No Device found.
If I restart my computer : First Launch = device detected, second launch = device not detected.
Version installed: fprint_demo 0.4-2 | libfprint 0.0.6-8 | pam_fprint 0.2-2

I don't know if this problem is due to fprint, drivers or anything else...

Thanks for your help.