When I connect the external monitor to the laptop and power on laptop with its lid closed and start plasma. it shows black screen on startup. I can't right click on it. Wallpaper is not shown. latte-dock crashes sometimes. but everything else seems to works. I can start konsole, Firefox ..etc from krunner. I have to restart plasmashell with command `killall plasmashell && plasmashell`. Sometimes nothing opens up and I have to open laptop lid to be able to open konsole and restart plasmashell
STEPS TO REPRODUCE
1. connect external display to laptop
2. press power button and close the laptop lid
3. on bootup, start the plasma x11 session
greeted with black wallpaper and cant right click or draw selection rectangle on desktop
greeted with wallpaper, can right click and draw selection rectangle on desktop.
Operating System: Arch Linux
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.84.0
Qt Version: 5.15.2
Kernel Version: 5.13.7-zen1-1-zen (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz
Memory: 19.4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Sounds like plasma crashed. Can you get a backtrace for `plasmashell`? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports.
(In reply to Nate Graham from comment #1)
> Sounds like plasma crashed.
I can see it running in ksysguard. i have to kill it and start again.
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it does not crash
OK, in that case this is a variant of Bug 391531
*** This bug has been marked as a duplicate of bug 391531 ***
*** This bug has been marked as a duplicate of bug 371717 ***
*** This bug has been marked as a duplicate of bug 353975 ***