Arch Linux

raul_nds

Member

From: Lisbon, Portugal

Registered: 2007-06-28

Posts: 258

Fprint problem (could not claim interface)

This is a know issue, but the solution in the page doesn't work for me, because there is no usb group. I've seen people who got past this. How do I do it?

Here is the error and the solution

Q: Running pam_fprint_enroll and fprint_demo from user fails with message like following:

aes1610:error [dev_init] could not claim interface 0

A: You have no permissions to access /proc/bus/usb (/dev/bus/usb). Solution depends on distro. On Gentoo you should add your user to usb group. Same solution should be applicable for other distros. Invoke mount | grep usb, it should produce something like:

anarsoul@anarsoul-laptop ~ $ mount | grep usb
usbfs on /proc/bus/usb type usbfs (rw,noexec,nosuid,devmode=0664,devgid=85)

So, /proc/bus/usb belongs to group with gid 85. Now let's get group name:

anarsoul@anarsoul-laptop ~ $ cat /etc/group | grep 85 | cut -f 1 -d:
usb

Add your user to this group:

sudo usermod -a -G usb your_user_name

but what I get is:

[raul@horus ~]$ mount | grep usb
none on /proc/bus/usb type usbfs (rw)
[raul@horus ~]$

It works fine with sudo

raul_nds

Member

From: Lisbon, Portugal

Registered: 2007-06-28

Posts: 258

Re: Fprint problem (could not claim interface)

Pretty  please?

originalsurfmex

Member

Registered: 2008-11-13

Posts: 150

Re: Fprint problem (could not claim interface)

i did

sudo pam_fprint_enroll

but like you i was all frustrated by a similar error until i tried sudo.