JBoss Developer Studio freezes with XSD, WSDL, SwitchYard editors

Recently I started facing a strange issue on my ArchLinux boxes with JBoss Developer Studio (which is an enriched Eclipse under the covers). I was not able to open XSD, WSDL or SwitchYard visual editors. Part of the GUI just froze. Clicking on the close button opened the close dialog which allowed part of the interface to be redrawn.

I was quite desperate about it. It only affected my ArchLinux x86_64 boxes. I used multiple JVMs (Oracle, OpenJDK), different window managers (Fluxbox, Openbox, Gnome Shell). I verified the same Linux kernel in Fedora does not cause the issue. So what now?

What gave me some guidance was this command I found on StackOverflow (you must provide your own process number):

cat /proc/803/maps | awk '{print $6}' | grep '\.so' | sort | uniq

I compared the libraries before and after opening the problematic editor.

> /usr/lib/gtk-2.0/2.10.0/printbackends/libprintbackend-cups.so
> /usr/lib/gtk-2.0/2.10.0/printbackends/libprintbackend-file.so
> /usr/lib/libcom_err.so.2.1
> /usr/lib/libcrypt-2.18.so
> /usr/lib/libcups.so.2

This was a trace of a pretty old Eclipse bug. Surprisingly, the bug is still present in Eclipse Kepler with Gtk 2.24.20.

I tried the suggested workarounds by disabling CUPS server in /etc/cups/client.conf and passing -vmargs -Dorg.eclipse.swt.internal.gtk.disablePrinting to Eclipse. Both helped a little, but did not make Eclipse completely usable.

What really helped me was installing cups-pdf package, enabling CUPS via

systemctl enable cups.service

Then I started the service with

systemctl start cups.service

And configured a PDF printer at localhost:631.

I cannot express my happines about running CUPS on my machine :-(

. .