scdaemon lockup with Yubikey NEO
Ben Warren
biggerbadderben at gmail.com
Fri Nov 20 16:26:51 CET 2015
Hi,
I’ve noticed several other problem reports that seem similar, hopefully
they’re all related and there’s a simple fix.
The problem:
After an indeterminate amount of time (sometimes minutes, sometimes hours),
any GPG operation that uses my Yubikey NEO device hangs. The two most
common operations are SSH authentication and git signing. The following
sequence gets things going again:
$ killall -SIGKILL scdaemon
$ gpg2 —card-status
System particulars:
- Host OS is OS-X Yosemite, although it is also present on Mavericks
(haven’t tried El Capitan yet)
- GPG 2.1.5
- Using the Yubikey’s authentication subkey to login to remote Linux
hosts
- Using the Yubikey’s signing subkey for git signing operations, both
local and remote
- Using gpg-agent for forwarding both GPG and SSH (great features, BTW!)
GPG configuration file:
$ cat ~/.gnupg/gpg-agent.conf
default-cache-ttl 1
ignore-cache-for-signing
no-allow-external-cache
max-cache-ttl 1
extra-socket ${HOME}/.gnupg/S.gpg-extra-agent
debug-all
log-file ${HOME}/.gnupg/mygpglogfile.log
enable-ssh-support
I’ll be happy to help debug this, but need some guidance.
thanks,
Ben
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