I use a Yubikey 4 with a static password to login to full disk encryption at boot. On my other computers, it works fine. But on the Librem 15 version 4, it does not consistently reproduce the same characters. The resulting characters randomly alternate between the expected characters and their corresponding SHIFT characters, for example characters a or A, or characters 5 or %. I confirmed in gedit. Just to confirm, I tried in all four USB ports of the laptop, I rebooted a few times and tried again, and it's the same inconsistency.
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Hi,
Thanks for reporting this issue.
You mention testing in other operating systems - which ones did you try?
Knowing which ones you've tried which systems work may help narrow down possible places to look for the cause of this.
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My Yubikey has worked on:
- Windows 10 laptop
- Ubuntu 18.04 on System76 PC
- Ubuntu 18.04 on Chromebook
Something strange just happened, and I don't understand how to explain it. After I plugged the Yubikey in the Windows laptop just now, it said "configuring your Yubikey", then back to my Librem, now the characters are consistent. I can't reproduce the inconsistency anymore, so it will be hard to troubleshoot. I will cancel this ticket.
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The Yubikey has a USB Keyboard driver included on the key. This may affect the way it appears in different operating systems.