SUMMARY When you select a bad resolution and the display become unusable, their is no dialog to cancel like in Windows 10 or KDE 4 for example. STEPS TO REPRODUCE 1. Open kscreen in system config. 2. Set a resolution or a fractional scaling way to big for your screen. 3. Click apply. OBSERVED RESULT The display become unusable. EXPECTED RESULT A confirmation dialog appear to ask you if you want to keep this configuration. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.18.80 KDE Frameworks Version: 5.70 Qt Version: 5.14.1 ADDITIONAL INFORMATION
duplicate of bug 397499
*** This bug has been marked as a duplicate of bug 397499 ***