Much like some of the details in https://bugs.kde.org/show_bug.cgi?id=338999, I can consistently make the entire KDE desktop hang, simply by playing a video in VLC, or the Dragon Video player - currently running 5.6.5 of plasma, 5.23.0 of kde frameworks. I'm using the NVidia binary driver at version 367.35. I'm currently using the OpenGL 2.0 rendring backend, with the GLX interface - have tried OpenGL 3.1 - doesn't seem to make any difference. I have stable hardware - I was running the 14.04 LTS edition (with whatever version of KDE is included) for a long period of time with no issues. After making the (mistake) to upgrade to 16.04 LTS, KDE is nearly unusable on a multi-monitor system. I'm aware of https://bugs.kde.org/show_bug.cgi?id=346961 and hoping that the claimed fixes in 5.8 finally fix that mess (but still waiting for a way to easily get 5.8 onto this ubuntu system - doesn't seem to be any packages for ubuntu yet...) This issue, is that anytime I open VLC 2.2.2, upon playing a video for a while - the entire KDE desktop will hang. The hang can be made to happen sooner by jumping around in the video - it happens within seconds. The only recovery is to Ctrl+Alt F key to another terminal (and even that usually takes 30+ seconds to respond) and then kill -9 VLC. Dragon player seems to behave even worse - launching that player typically causes my desktop to instantly forget that it has 3 monitors - reconfiguring itself in a mode where all 3 of my monitors are set to mirror, and their resolution is set to a very low value. The Totem video player seems to work ok - so it would seem to be tied to whatever technique VLC and Dragon have in common for handling video. Happy to provide any useful debug info, or other information, as I can reproduce the problem at will. Reproducible: Always Steps to Reproduce: 1.Launch VLC - leave windowed. 2. Jump forward and back in the video. 3. Sometimes the video just freezes in VLC. Most times, the entire KDE desktop hangs - can't even move the mouse.
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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!