After an update my user password stopped working. I tried booting to the fallbak kernel and still no joy. I then was able to get my password working on a completely different kernel on that same system. Has anyone seen this before? I’m not new to Linux, but I don’t know a whole lot about it.
I’ve had something like this happen also, but in my case sudo wasn’t working. I carefully typed my password a bunch of times and had no luck. Rebooted and it worked fine. Fresh install also. People reading this probably can’t trust a random person reporting the issue but maybe more will see it and post?
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Had the same issue a while ago.
For me the solution was : faillock --reset
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I’m sorry that I didn’t reply earlier. For me, the weekend before Christmas is crazy buys. Like most guys, I don’t bother buying presents until this weekend. 
I’ll give it a shot tonight.
Thanks, again.
Glen
It worked!!! I’m using my primary kernel right now.
Thank you, and Marry Christmas!
Glen
I, also, set your reply as the solution for this problem. You’ll be helping CachyOS users for years to come!
Thank you.
Glen
Happy to help.
Merry Xmas to ya too 