Still on xubuntu 20.04, this gives a good hint https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870641
1. go to terminal ctrl+alt+f1 2. `killall screen-lockers` 3. back to UI ctrl+alt+f7 4. type password
Still on xubuntu 20.04, this gives a good hint /bugs.debian. org/cgi- bin/bugreport. cgi?bug= 870641
https:/
1. go to terminal ctrl+alt+f1
2. `killall screen-lockers`
3. back to UI ctrl+alt+f7
4. type password