#StackBounty: #java #xserver Java programs cause my xserver to freeze

Bounty: 100

I’m running Ubuntu 15.10. Sometimes running Java programs causes my entire xserver to freeze. I can’t close stuff, use programs, or do stuff like type in terminal. Using Control+Alt+F1 allows me to kill the Java process to unfreeze the xserver.

Looking at the Java process, it’s not using a huge amount of CPU (1-3%) or RAM (50MB-100MB).
My java version:

paul@paulpc:~$ java -version
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)

However, running Java programs with taskset 0x80 <program> seems to make the programs not crash the xserver, however they run much slower. An example program that causes this is Netbeans.

Let me know if I need to provide any more details.

Get this bounty!!!

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