Smartcard reader disconnects

[NIIBE Yutaka]

Hello,

On 09/20/2015 05:07 AM, Miguel Barbosa Gonçalves wrote:
> Sometimes, after doing an operation, the smartcard reader apparently
> disconnects and I can only get it to work if I disconnect and
> reconnect it.

How do you conclude that "smartcard reader apparently disconnects"?
Did you see any error message or something?

> When it gets disconnected, if I try to access it, I get the following
> 
> $ gpg --card-status
> gpg: selecting openpgp failed: ec=6.108
> gpg: OpenPGP card not available: general error

What's the output of "lsusb" when you encounter this?  Do you still
see valid entry of your card reader?

> By the way, I am using Ubuntu 14.04 and everything works except for this.

When your 'gpg' is GnuPG 1.4.x and it's not configured using agent, it
is possible that there is gpg-agent and scdaemon running with your
card reader and GnuPG frontend of 'gpg' tries to access the card
reader directly and fails.
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