[fprint] could not open device R61i / Ubuntu Studio

[Vasily Khoruzhick]

On 6 April 2008 13:41:37 collectif Fossile wrote:
> Hi everybody !
>
> we are a french group of artists, currently developping an installation
> in-situ in Tours (France). The whole work deals with fingerprints
> considered as a graphical element and a way to question people about
> biometry.
>
> Our installation (temporarily named "digimap") uses a microsoft fingerprint
> reader on ubuntu studio. We're not using the authentification functions
> yet, and all we have to do is to detect the presence of a finger on the
> device, scan it and use binarization and minutiae detection functions. I've
> been compiling libfprint 0.0.6 (thanks for this release !) on an old
> Toshiba laptop running Ubuntu and it works great. Our device would not be
> detected with 0.0.5 version.
>
> The actual problem is that I would like to use the same device on a Lenovo
> R61i 7650 A9G with Ubuntu studio. I've installed the same .dev libraries we
> needed to run it on Ubuntu, but it doesn't work! In Fprint demo, the device
> is detected (it flashes red lights) and the required driver is identified
> (URU4000), but the dialog box says "Could not open device"
>
> As I'm a newbie to Linux, Ubuntu, and Libfprint, Il would appreciate very
> much any troubleshooting suggestion or related experiences ! The first
> version of our project is supposed to be ready and on 15th march.
>
> thanks a lot !
>
> Samuel for the Collectif Fossile

It seems that you have problems with permissions on usbfs. I don't know how to 
fix it in ubuntu, in gentoo you just have to add your user to usb group, and 
that's all.

Regards
Vasily