Bug 501088

SUMMARY
Triple head displays are blank on login screen and desktop.  Used to work before updates.  No hardware changes.  Unplugging and plugging back in displays causes them to work again for that session.

STEPS TO REPRODUCE
1. Boot PC See boot logo on all three displays
2. Login Screen Black except for static cursor in top left.  Unplug display, the other two come on, plug back in, all three on.  Log in.
3. All three black again, repeat unplug display, the other two come on, plug back in, all three on.

OBSERVED RESULT
The displays are blank.  They are on and displaying only black.  Unplugging one display, doesn't matter which one, will cause the other two to show the login screen or desktop depending on step.  Plugging that display back in all three displays show the login screen or desktop.

EXPECTED RESULT
All three displays show the login screen or desktop like they did before.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.5-200.fc41.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6500T CPU @ 2.50GHz
Memory: 31.2 GiB of RAM
Graphics Processor: Intel® HD Graphics 530
Manufacturer: LENOVO
Product Name: 10FM001UUS
System Version: ThinkCentre M900

ADDITIONAL INFORMATION
Something is unable to display the desktop correctly when it has all three displays attached.  This is a new behavior and did not occur until about a week or two ago.