Authentication Password Failure in Manjaro ARM Testing KDE

[NeoVeo]

Hi All,
This issue isn’t present on my main ride, but rather on the ARM version I am trying on an old Android box.

I have tried both the Manjaro ARM (testing) KDE and XFCE versions on this box and keep running into an Authentication Password Failure in KDE.
I turn on display password to double check the password was entered correctly and even tried using 1234 as the password based on a suggestion in another post.
Nothing works.
I read that it may be related to the keyboard, so I tried selecting several different keyboards in the OS (several generic keyboards plus several from the actual manufacturer of my keyboard) but no joy.

If you are wondering why I use the Testing version, it is because this is the only way that I can get Ethernet to work, sadly WiFi does not work.

I searched the forums and found this thread:

Authentication password failure

I have completed a fresh install of Manjaro KDE Plasma 21.0.7 on a desk top PC and in a separate SSD to the rest of my system. The bootable USB install went fine and booted for the first time post install with no issues. I opted not to password my login. When I went to install the many updates available I get an authentication error despite my password being 100% correct. I have reinstalled about 3 times changing my password but to no avail. I have searched for solutions in the forums but nothin…

However it is two years old and remains unresolved.

If anyone is able to help, I will be most grateful!

[linux-aarhus]

Update the algoritm used for the stored passwd

1. Switch to a TTY
2. Login as root
3. Set a new passwd for the account in question

   passwd <account>
   

If you so desire you can now set passwd back to the previous one

[NeoVeo]

Many thanks @linux-aarhus, I appreciate your help.
I tried your suggestion but unfortunately in Terminal I wasn’t able to switch to root.
For the record I typed SU and when it asked for my password, I entered it and was hit with the same Authentication Failure that I get in pamac.

[linux-aarhus]

I specifically mentioned TTY - but if your root passwd is not recognized either - there is something wrong with your configuration elsewhere.

1. Logout
2. CtrlAltF4
3. enter login root
4. enter root passwd
5. passwd <account>
6. enter new passwd (do not reuse)
7. repeat new password

Optionally
8. reuse the old password by repeating step 5…7

Then type exit and Enter

Depending on your system - use CtrlAltF7 or CtrlAltF1 to return to your login screen.

[NeoVeo]

@linux-aarhus your solution worked like MAGIC!!!
Thank you very much for your help!