[fprint] fprint for standby authentication

[Bastien Nocera]

On Tue, 2010-04-20 at 16:37 +0200, Pietro Battiston wrote:
> Il giorno mar, 20/04/2010 alle 14.21 +0100, Bastien Nocera ha scritto: 
> > On Tue, 2010-04-20 at 15:03 +0200, Pietro Battiston wrote:
> > > Hello,
> > > 
> > > I'm an Ubuntu user which has fprint working fine on an "AuthenTec, Inc.
> > > AES1600".
> > > 
> > > However, "fine" means that after editing pam configuration it works for
> > > - login (gdm)
> > > - privileges escalation (policykit)
> > > 
> > > _but_ I found no hints on how to configure pam configuration to use it
> > > when waking up from standby/hibernation/locked screen.
> > 
> > If by that you mean unlocking the screensaver, then you'd need to setup
> > your screensaver to do that. This is what Fedora would do if you enabled
> > fingerprint authentication.
> 
> I don't know if I know what I mean, but I ask just the following: when
> you wakeup from suspend a laptop with Fedora, I guess in its standard
> configuration it will ask a password, right? Now, is it possible to use
> the fingerprint instead than giving a password?
> 
> I tried to add
> 
> auth   sufficient                      pam_fprint.so
> 
> at the beginning of /etc/pam.d/gnome-screensaver but with no success (I
> admit I ignore if Fedora has similar configuration files).
> 
> By "setup your screensaver" you mean gnome-screensaver-preferences?

1) Don't use pam_fprint, use pam_fprintd
2) It works doing something similar in Fedora

You can try it out using a Fedora 12 live CD to compare. In Fedora, it
was integrated in authconfig, so you just have to tick a box to enable
Fingerprint authentication.

In any case, my guess is that pam stack can't load the pam_fprint
module, enable debug in gnome-screensaver, or if there's no errors
there, enable debug for the module.

Cheers