Hi, I also had to downgrade the lib: *libkscreenlocker5.*
1. wget ' https://snapshot.debian.org/archive/debian/20201030T214408Z/pool/main/k/kdecoration/libkdecorations2-5v5_5.17.5-2_amd64.deb ' 2. wget https://snapshot.debian.org/archive/debian/20201030T214408Z/pool/main/libk/libkscreen/libkf5screen-bin_5.17.5-3_amd64.deb 3. wget https://snapshot.debian.org/archive/debian/20201030T214408Z/pool/main/libk/libkscreen/libkf5screen7_5.17.5-3_amd64.deb 4. wget https://snapshot.debian.org/archive/debian/20200215T052412Z/pool/main/k/kscreenlocker/libkscreenlocker5_5.17.5-2_amd64.deb 5. sudo dpkg -i ./libk*.deb 6. reboot Ciao *Negiot* Special Thanks to *Sherpya* for libkscreenlocker5. https://bugs.debian.org/cgi-bin/pkgreport.cgi?submitter=sherpya%40netfarm.it
