https://bugs.kde.org/show_bug.cgi?id=359188

            Bug ID: 359188
           Summary: kwin_x11 crashes if Minecraft 1.6.4 (Modded) starts
                    and finishing loading
           Product: kwin
           Version: 5.4.2
          Platform: Ubuntu Packages
               URL: https://youtu.be/jHEEnC79HZc
                OS: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: decorations
          Assignee: kwin-bugs-n...@kde.org
          Reporter: wendefelix1...@gmail.com

Happens if Minecraft 1.6.4 ('Attack of the B-Team') starts.

Reproducible: Sometimes

Steps to Reproduce:
1. Download and start the "Technic Launcher" from http://www.technicpack.net/
(Note: a premium minecraftaccount from minecraft.net is needed to play this)
2. Install the Modpack "Attack of the B-Team"
3. Play it

Actual Results:  
with a 80% chance, kwin_x11 crashes with result as a shattered screen, till it
gets restarted with "$ kwin_x11 --replace"

Expected Results:  
No crash of kwin_x11

I regonized that Minecraft with the current modpack starts in fullscreen and if
loaded wants to exit the fullscreen, I tried it with a Window-Rule that deny
fullscreen. It works but kwin_x11 is still crashing.

I using Kubuntu 15.10 (no alternate PPA/Repo for KDE)
I using a Nvidia GTX 750 Ti with the Nvidia binary driver 352.22

(The freeze in the video is a another bug related to my Nvidia-Card after
boot.)

I don't know weather that is related to this crash, but in case of a V-Sync
failure I added following entrys to the file ~/.profile:
export __GL_YIELD="USLEEP"
export __GL_THREADED_OPTIMIZATIONS=1
This forces all applications to use V-Sync.

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