Public bug reported:
Problem : i select my user on gdm, it waits for me to pass my thumb over
the finger scanner, i do it, gdm segfaults and restart.
Frequency : it does not happen every time, sometimes it works at the
first try, sometime it crash (segfault) and i do it again and it works.
Sometime (like this one) i had to disable libfprint in /etc/pam.d/gdm
because it keeps crashing and i just can't login.
What i did to make gdm use libfprint : i installed the package
libfprint0 libpam-fprint and fprint-demo , i registered my thumb finger
print, modified my /etc/pam.d/gdm to be like :
#%PAM-1.0
auth requisite pam_nologin.so
auth sufficient pam_fprint.so
auth required pam_env.so readenv=1
etc ...
and when it doesn't segfault, it works very well, apart the lack of
integration into gdm (as said in another bug report i've just read)
what i get in output in dmesg :
[ 44.179389] gdm[5817]: segfault at 2197000 ip 00007f615726b830 sp
00007fff69a94010 error 4 in libfprint.so.0.0.0[7f615725d000+29000]
[ 107.908014] gdm[6211]: segfault at 219a000 ip 00007f615726b830 sp
00007fff69a93e80 error 4 in libfprint.so.0.0.0[7f615725d000+29000]
[ 117.283201] gdm[7271]: segfault at 219c000 ip 00007f615726b830 sp
00007fff69a93e80 error 4 in libfprint.so.0.0.0[7f615725d000+29000]
[ 127.576330] gdm[7392]: segfault at 219d000 ip 00007f615726b830 sp
00007fff69a93e80 error 4 in libfprint.so.0.0.0[7f615725d000+29000]
[ 164.345529] gdm[7584]: segfault at 219f000 ip 00007f615726b830 sp
00007fff69a93e80 error 4 in libfprint.so.0.0.0[7f615725d000+29000]
(yes i tried several times)
I'm using ubuntu intrepid ibex 8.10 for amd64
my laptop is HP tx2670ef (recent one)
i'm using free graphic driver for ati hd3200
i'm using wacom driver in X.org for sensitive screen
kernel :
Linux tablet 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64
GNU/Linux
libfprint0 package version : 0.0.6-2
libpam-fprint package version : 0.2-3
My ubuntu is totally up to date so i'm using last X.org and last gdm.
The device i use to do finger prints : Bus 007 Device 002: ID 08ff:1600
AuthenTec, Inc. AES1600
If you need more information about my configuration (hardware or
software) please feel free to ask me :)
** Affects: libfprint (Ubuntu)
Importance: Undecided
Status: New
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gdm segfaults sometime using libfprint (finger print authentification)
https://bugs.launchpad.net/bugs/318397
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