I can lock the screen with Ctrl+Alt+L, but then I cannot unlock the screen, really I don't know how to do it

Please could you help me?

Using

Code: Select all

kf5-plasma-5.8.0-1.fc21.x86_64
plasma-breeze-common-5.2.2-1.fc21.noarch
plasma-systemsettings-5.2.2-1.fc21.x86_64
plasma-nm-5.2.2-1.fc21.x86_64
plasma-milou-5.2.2-1.fc21.x86_64
kde-settings-plasma-21-3.fc21.noarch
plasma-desktop-5.2.2-5.fc21.x86_64
plasma-workspace-5.2.2-5.fc21.x86_64
kdeplasma-addons-5.2.2-1.fc21.x86_64
plasma-breeze-5.2.2-1.fc21.x86_64
plasma-workspace-wallpapers-5.2.2-1.fc21.noarch
plasma-oxygen-5.2.2-1.fc21.x86_64
plasma5-5.2.1-2.fc21.noarch

Thanks in advance

Well, what do you see? You should see a password field.

Need more info on this.

Please check with downstream (Fedora) whether your PAM configuration is able to unlock the screen. A lot of issues with the screen locker end up being issues with PAM (and so the kcheckpass program - the one who does the checking - can't access the passwords).