System ask me to enter password for password everytime I disconnect from my home wifi (screen is locked, logging of, rebooting etc.). Reproducible: Always Steps to Reproduce: 1. Disconnecting from wi-fi and then trying to connect. Actual Results: Dialog for entering password pops up. Expected Results: Just connecting to wifi automatically. There was no problem, when I have my password in kde wallet.
I forget to emphasis, that it happens only with my home wi-fi as far as I know.
Check your home network configuration, specificaly where do you store your passwords. What is your version of plasma-nm?
How can I check where my passwords are stored, please? I am not sure what you mean by your second question, "dpkg -s plasma-nm" told me: "Version: 4:5.5.5-0ubuntu".
Open kde5-nm-connection-editor, go and configure your home connection and in "Wireless security" tab on the line where you have password there should be a small icon on the right, where you can switch how to store your passwords. I would also try just not modifying connection and just save it again.
I am sorry, but now for because of some error of my GPU my kubuntu doesn't load, so I can't tell you result of your recomendation, but nevertheless thank you.
*** This bug has been marked as a duplicate of bug 377473 ***
*** This bug has been marked as a duplicate of bug 387502 ***