SUMMARY KDE setting -> Accessibility -> Bell -> Visual bell Visual bell does not work when any notification coming. STEPS TO REPRODUCE 1. Open KDE setting (GUI) 2. Click "Accessibility" 3. Click Bell 4. Enable visual bell, invert screen or Flash. 5. Run the test command in terminal: "notify-send 'test' 6. Visual bell does not show. EXPECTED RESULT Visual bell should shows deaf people when incoming notification. Thanks! SOFTWARE/OS VERSIONS Linux/KDE Plasma: Manjaro latest version. KDE Plasma 5.21.2 KDE Plasma Version: 5.21.2 (latest) KDE Frameworks Version: 5.79.0 (latest) Qt Version: 5.15.2 (latest)
Sorry, it has nothing to do with any visible notification. But it works with invisible bell.