Can't read serial from my GitHub U2F Yubikey

[patrys]

Can't read serial from my GitHub U2F Yubikey

[patrys]

Yes, we're good, I just wanted to follow-up with clarification if anyone hits a similar problem.

[thuandt]

After upgrade libykpers 1.19.1 in Yubico PPA: https://launchpad.net/~yubico/+archive/ubuntu/stable/+sourcepub/9924663/+listing-archive-extra

My 2 keys (5+4 Nano) can't response challenge code as follow docs https://support.yubico.com/support/solutions/articles/15000011355-ubuntu-linux-login-guide-challenge-response#4_Associating_the_YubiKey(s)_With_Your_Accounth5yjvi

ykpamcfg
debug: util.c:376 (get_user_challenge_file): Failed to read serial number (serial-api-visible disabled?).

UPDATE:

• 1.19.2 released is fixed this problem

[klali]

The github u2f key is for u2f only while this project is for the OTP interface of YubiKeys.

/klas

[patrys]

It seems the keys we received are not really u2f keys despite being labelled as such. They claim to be "Yubico Yubikey 4 OTP+CCID", don't respond to serial number and capability requests but OTP works fine.

[klali]

Some of the github edition keys where shipped with wrong configuration (no u2f support). You should've had an email from Yubico describing how to rectify this situation, if not you can contact Yubico support for how to get the correct device.