SCR3310 reader working for root, but not scard group

Grant Olson kgo at
Sun Feb 27 03:36:57 CET 2011

On 02/26/2011 07:45 PM, Todd A. Jacobs wrote:
> I have an SCR3310 card reader on an Ubuntu 10.10 system, and installed
> the drivers through the libccid package. This works out of the box for
> root, but mortal users can't access the card at all. I tried a lightly
> modified version of the scripts from
> but without success.

That doc is pretty out of date, at least regarding hardware
configuration.  You shouldn't need to do anything config-wise to get a
CCID-enabled reader working these days.  I've used my SCR3310 on Ubuntu
10.10 as well as 10.4 without any problems and without having to do any
manual configuration.

I do seem to remember that I had to install the gpgsm package.  For some
reason the smart card daemon program was bundled there.  You might want
to give that a try.  (But I guess that'd only matter if you have
'use-agent' configured or are running gpg2 instead of gpg.)

You also might want to make sure that root or another user didn't grab
on to the reader and refuse to release the resources while you were
testing, either by looking at your processes, or doing a good
old-fashioned reboot.


"Look around! Can you construct some sort of rudimentary lathe?"

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