Error: Unable to open the Yubikey card: connecting to smart card: the smart card cannot be accessed because of other connections outstanding

[dud225]

Hello

I'm able to build a program with this library that allows me to successfully interact with my YubiKey. However under some conditions, e.g. after some idle period, I'm getting the aforementioned erorr:

Error: Unable to open the Yubikey card: connecting to smart card: the smart card cannot be accessed because of other connections outstanding

I'm not sure if there is anything wrong with piv-go. But I'm quite puzzled since I make thorough use of the Close() method and additionally I don't get this error with other tools e.g. libykcs11.so.

[udf2457]

I stumbled accross this one today too.

I am using Close() but this does not appear to be honoured.

Even if I add time.Sleep(20 * time.Second) after Close() , piv-go still seems to be holding on to that connection.

[dstrbad]

Any update on this one maybe? We stumbled across this one as well.

[andsens]

From FiloSottile/yubikey-agent#98 (comment)
Use sudo lsof +E /run/pcscd/pcscd.comm to see which processes may be accessing the yubikey. In my case it was gnomes gsd-smartcard daemon.