I use kolourpaint a lot, so I put it in the KDE tray. After reboot, desktop never comes up - just the KDE logo on a black background, then a dark gray screen forever. No errors in boot.log. Restoring the configuration without Kolourpaint in the tray (many other things in the tray, though) makes the problem go away.
Can you tell me how you "put it in the KDE tray", please ?
Created attachment 103032 [details] Screenshot of KDE panel with launchers
I put things in the tray by dragging them from the applications menus onto the top panel, as shown in the screen shot.
I can not reproduce this, but let's get some details, please: Which KDE Version are you using, which kolourpaint version ? Are you using plasmashell (from KDE Frameworks 5) as desktop or is this still plasma-desktop from KDE4 (check with ps -ef | grep plasma) ? Is there any useful log output in your ~/.xsession-errors* file regarding this problem (e.g. from kolourpaint or from plasma) ?
Sorry, I thought that, by clicking the bug report About it would include KDE and Kolourpaint version info. Definitely running plasmashell. There is nothing called ~/.xsession* file Here's where it gets a little weird. Kolourpaint says: Version 16.08.3 KDE Frameworks 5.27.0 Qt 5.7.1 (built against 5.7.0) The xcb windowing system Konqueror says: KDE Platform Version 4.14.26
I still can't reproduce it. I created a new empty panel on top, dropped kolourpaint into it from the applications menu, logged out, in again - no problem. The top panel is there, kolourpaint icon is there... I'm using openSuse Leap 42.2 - maybe this makes it different... I need more information about the crash or a way to reproduce it. Maybe you can globally activate core dumps when a program crashes, or maybe "kdebugdialog5 --fullmode" helps to redirect plasmas logs into some file where we can see more what happens.
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Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!