Created attachment 185965 [details] Notice that the second monitor is black, and when you try to right-click, there is no response. SUMMARY STEPS TO REPRODUCE 1. Log in with your username. 2. Perform your regular activities. 3. Disable sleep/hibernation mode. 4. Turn off the monitors in use and leave them idle. 5. Return the next day and enter your username password. 6. Check that the wallpaper is missing on the second monitor and that the context menu is not working. OBSERVED RESULT Notice that the second monitor is black, and when you try to right-click, there is no response. EXPECTED RESULT Display both wallpapers, or one if you have set them to replicate on both monitors. SOFTWARE/OS VERSIONS Linux/KDE Plasma: EndeavourOS KDE Plasma Version: 6.4.5 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Graphics Platform: X11 ADDITIONAL INFORMATION Attached is one of the latest screenshots I took showing the problem described. Note that this has been happening since Plasma 6.3, and I haven't been able to find a solution, and this bug has not yet been reported.
Thank you for the bug report! However Plasma 6.3.0 no longer receives updates or maintenance from KDE; active versions are 6.4 or newer. Please upgrade to an active version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one. If you need help with Plasma 6.3.0, please contact your distribution, who bears the responsibility of providing help for older releases that are no longer receiving updates from KDE. If you can reproduce the issue after upgrading to an active version, feel free to re-open this bug report.
I can confirm that after updating the operating system, and with version 6.5 just released, when I log in again the next day, the problem recurs.
(In reply to matospmiguela from comment #2) > I can confirm that after updating the operating system, and with version 6.5 > just released, when I log in again the next day, the problem recurs.
Created attachment 188005 [details] kscreen debub report for black screen issue I have attached a full kscreen-console report. I've confirmed the issue is resolved entirely by disabling Kscreen 2 (kcm_kded) which strongly suggests a timing conflict during the initial handshake of the two ports.
Comment on attachment 188005 [details] kscreen debub report for black screen issue Software: KDE Plasma Version 6.5.3, KDE Frameworks Version 6.20.0, Qt Version 6.10.1, Kernel Version 6.14.0-37-generic (64-bit) Graphics platform Wayland Hardware: Processors - 4 x Intel Core i5-6400 2.7Ghz Mem - 8GiB Graphics Processor - Intel HD Graphics 530 "integrated" Manufacturer - AsusTek Monitors: Primary - DVI - Acer Model R240HY Secondary - HDMI - Dell ST2421LB
With Kscreen 2 disabled the desktop now initializes correctly on both monitors Acer (DP-1) and Dell (HDMI). there is approx a 10 second delay (latency) after desktop initialization before the desktop shell (right click functionality) became active. this suggests that the system is successfully waiting for the DVI handshake to complete where as KScreen 2 was likely timing out and failing during this window. Again KDE Neon Plasma 6.5.3.
I also observed that before disabling KScreen 2 the Application Launcher (kickoff) would not close when clicking away; it required a second click on the icon to dismiss. Since disabling KScreen 2 service, the launcher now correctly auto-hides when losing focus. This suggests the handshake latency was impacting the global window focus chain. *hope this helps