RealVNC java client in Firefox crashes X server after loging in.

[random]

Binary package hint: firefox-3.5

When logging in to a local RealVNC server using the RealVNC java client in Firefox, X crashes and starts again.

Release: Ubuntu 9.10

ProblemType: Bug
Architecture: amd64
Date: Sun Nov 8 13:11:55 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: firefox-3.5 3.5.4+nobinonly-0ubuntu0.9.10.1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-14-generic x86_64
XsessionErrors:
 (gnome-settings-daemon:2509): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:2509): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:2612): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:2615): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (yelp:3108): Yelp-WARNING **: Failed to load config file: No such file or directory

[Sven Nobis (svennobis)]

It's not a browser specific bug. The java runtime (openjdk & sun jdk ,too) let crash the x-server.

[Sven Nobis (svennobis)]

I can confirm the bug, RealVNC 4.1 Applet/Application crashes the X-Server when using a composing window manager (Compiz, KWin with composing effects; metacity isn't affected). I'm using the nvidia-glx-185 Driver.
I have attached the Java Application, so you can test it. (You can also download it from: http://www.realvnc.com/products/free/4.1/download.html)
You can start it with: java -jar VNC.jar
(You need a vncserver, The easiest way to get one is:
apt-get install tightvncserver
vncserver)

[Matthias Klose (doko)]

this works for me in lucid (using tightvncserver). is this still reproducible?

[Bernhard (b.a.koenig)]

I haven't seen it in Lucid anymore. But I cannot confirm 100% that it's completely fixed.

[Francis (francisd)]

I still have this bug on Ubuntu lucid 64 bits. Random bug, doesn't always crash.

[Russ Miranda (n-launchpad-samlhake-sneakemail-com)]

The X server in tightvnc-1.3.9 has problems on 64-bit systems, this was fixed in tightvnc-1.3.10. Patch for 1.3.9 sources available at http://sourceforge.net/tracker/?func=detail&aid=2570977&group_id=14067&atid=314067