[drdaeman]

This is essentially a diagnostic command, not really a fix ;)

For me, when gpg-agent gets "stuck", this command just fails. I forgot the exact message but it tells me that it can't find the device. `gpg-connect-agent KILLAGENT /bye` and then `gpg --card-status` (will automatically start a new gpg-agent daemon in the background) does the trick for me, but it's the first command that matters.

(Could be just `killall gpg-agent`, I guess)

Oh, I think on Windows, once I had to restart the Smartcards service, as restarting the agent haven't helped. Don't know what it was - I've experimented with OpenSC around that time so could be just about anything.