Description of problem: I'm using the standard F20 gnome desktop but I use kompare (KDE) because I like it better than meld (GNOME). Usually I use it indirectly through git difftool. Often (but not always) when I quit kompare there is a long pause (about 15 seconds) before the program quits. At that point, the following message appears on the terminal from which kompare was invoked (I don't know if it is stderr or stdout): QClipboard: Unable to receive an event from the clipboard manager in a reasonable time Version-Release number of selected component (if applicable): kompare-4.12.4-1.fc20.x86_64 How reproducible: For me, about 90% of the time. The exceptions MIGHT be after a fresh boot or login (not sure). Steps to Reproduce: 1.run kompare from xterm under GNOME desktop 2.quit 3.wait for termination and messages on xterm Actual results: slow quit On xterm: "QClipboard: Unable to receive an event from the clipboard manager in a reasonable time" Expected results: fast quit no message Additional info: This message shows up if you google for it. The closest match to my situation is https://bugreports.qt-project.org/browse/QTBUG-32853 This suggests that the problem is with QT and not kompare, but I don't experience it with other programs. I don't know how many KDE applications I use. I tried a minor experiment with kolourpaint and had no problem. https://bugzilla.redhat.com/show_bug.cgi?id=570908 Seems similar but it involved XFCE (I'm not using it)
Sorry, I accidentally submitted the report before I completed it. The message comes from /usr/lib64/libQtGui.so.4.8.6 It is from qt-x11-4.8.6-2.fc20.x86_64 Source RPM : qt-4.8.6-2.fc20.src.rpm I was able to duplicate the problem with kolourpaint. Not the first time I tried it, but the second. 1. start kolourpaint from a terminal 2. scribble something 3. select it 4. quit 5. agree to lose your unsaved drawing There is then a delay and then the same message appears on the terminal.
Does seem to match https://bugreports.qt-project.org/browse/QTBUG-32853 especially if the clipboard contents were large when you quit the app
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