I have this weird problem. I cannot type into the authentication dialogues. I mean those from kdesudo, or the one to open the wallet. The keyboard input just gets ignored. It works in any other window, so I can type the password into konsole, and then copy and paste it (using the mouse, ctrl+v won't work).
Anybody else has this happening??! It didn't happen before the upgrade.
Go to Application Launcher (Start Menu) -> Applications -> Settings -> Set Keyboard Input Method. Then, a message will come up: 'Current configuration for the input method: ...'.
Select OK. Then, a new message will come up: 'Do you explicitly select the user configuration? ...'.
Select Yes. Then, a list will come up.
Select 'default' - 'use cjkv mode set by /etc/default/im-config'. Then, a new message will come up: 'Setting the user configuration /home/user/.xinputrc to xim. ...'.
Restart KDE session (log-out and then log-in to KDE).
Go to Application Launcher (Start Menu) -> Applications -> Settings -> Set IBus Preferences. Then, a message will come up: 'Keyboard Input Methods (IBus Daemon) is not running. Do you wish to start it?'
Select Yes. Then, a new message will come up: 'IBus has been started! ...'.
If workaround-2 works for you, then, you will have to repeat it, in every KDE session (after every log-in to KDE). So, workaround-2 is not permanent.