SUMMARY STEPS TO REPRODUCE 1. Must have an empty password 2. Hibernate PC 3. Just hit enter when logging back in. OBSERVED RESULT Error and can't login EXPECTED RESULT login to desktop SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Linux Manjaro KDE (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION I had this exactly same issue and another user reported it. Source: https://www.reddit.com/r/ManjaroLinux/comments/osucsr/black_screen_with_cursor_after_sleephibernate/
*** This bug has been marked as a duplicate of bug 440055 ***