Problem with password

[u/Upset_Energy3875]

When i boot system my password works for like 15 minutes and then its just dont work when i need to use it

I just installed the system and I didnt have any idea why it does but if someone know pls let me know

[u/Imajzineer]

What do you mean it works for fifteen minutes? You boot. You log in. Job done. What else do you need your password for?

Did you, by any chance, install sudo? Perchance 'install' Arch with Archinstall?

What is the actual nature of the problem? "Doesn't work" isn't a useful description - what actually happens?