https://bugs.kde.org/show_bug.cgi?id=436078
--- Comment #8 from Valso <stalliondr...@gmail.com> --- I can't see an edit button here. Since I reported the problem to the GTK team, one of their developers, Luca Bacci, said: "Looks like Kolourpaint connects to the QClipboard::changed signal (frame 12, 13) and retrieves the contents of the clipboard. I don't know much about the X11 clipboard, but what happens is pretty clear: a deadlock because QClipboard waits for "data arrived" to be signaled, but since it goes into a wait state, GTK3 cannot provide any (if not by doing that from a worker thread). Anyway I don't know if it's possible to have X event loops in multiple threads. The only solution I see is to have Kolourpaint use async operations with QClipboard, that way Qt spins the main loop (and thus X events)." Hopefully this helps to fix the issue. -- You are receiving this mail because: You are watching all bug changes.