official eclipse neon freezes Elsa

It's a bug in the SWT porting on GTK3. There is no real solution, but there is a workaround by forcing Eclipse to use GTK2.

I a**ume your Eclipse folder is /opt/eclipse and that you don't have write permissions in this folder. Please change the commands, if your set-up differs.

There are two ways to apply this workaround, a long and explanatory way, and a short one for the lazy

1. Modifying eclipse.ini by hand

You need to open eclipse.ini in your Eclipse folder:

sudo -i scratch-text-editor /opt/eclipse/eclipse.ini
and add the following lines:

--launcher.GTK_version
2
It's important to add these lines before --launcher.appendVmargs, otherwise Eclipse will crash.

2. Using the command sed

An easier way to make these changes is to use sed. Copy&pase this command in your terminal and press Enter:

sudo sed -i '/--launcher.appendVmargs/ i \--launcher.GTK_version\n2' /opt/eclipse/eclipse.ini

Your Eclipse should work properly from now on.

Hope this Helps.
Regards,
Admin