[fprint] latest fprint_demo and pam_fprint git issues

[Daniel Drake]

Flocchini wrote:
> I just compled latest git ebuild and auth with my fingerprint still works but 
> i'm getting strange messages:
> 
> i.e., authenticating via shell
> 
> flocchini at sovereign ~ $ su
> Scan finger on Digital Persona U.are.U 4000/4000B
> libusb:error [libusb_cancel_transfer] cancel transfer failed error -1
> sovereign flocchini # 

You can ignore that for now, it doesn't cause any harm.

> fprint_demo no longer works, I see the new bar with "bouncing" indicator but 
> my fingerprint reader seems to be dead, usually it becomes red instead when 
> asked to enroll

Need to see libfprint debug log here (./configure --enable-debug-log)

> here the console output for my tries to verify my previous enrolled finger:
> 
> sovereign flocchini # fprint_demo
> ** Message: now monitoring fd 4
> async:error [fp_async_verify_stop] BUG at async.c:291

I assume this message (the first error) does not actually appear until 
after you try to cancel the scan, which is actually after the dead 
scanner problem occurs?

Thanks,
Daniel