Ubuntu: Why can't I get a working session with vnc4server



Question:

We have a couple of (identical) Ubuntu 11.10 machines, configured with gnome-classic, which we use as remote servers, and let our clients log into personal user accounts we create for them using vnc4server.

We configured all the machines in the same way, following a short manual we compiled, describing how to download, install and prepare a few tools and our software.

The connection usually works fine, but today I set up a fresh machine, and experienced problems.

After installing vnc4server, I ran vncpasswd and copied the following startup file to ~/.vnc/xstartup:

  #!/bin/sh    unset SESSION_MANAGER    unset DBUS_SESSION_BUS_ADDRESS    gnome-session --session=gnome-classic &    [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup    [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources    xsetroot -solid grey    vncconfig -iconic &    

Then, I started vnc4server and used two viewers (the Ubuntu Remote Desktop Viewer and Windows RealVNC Client) in two other machines, but instead of getting my desktop, I see an empty window with a grey-ish background pattern like this:

enter image description here

and the cursor is a bold X.

What is wrong with the setup and why don't I get a remote session as expected?


Solution:1

You may want to edit the /root/.vnc/xstartup file so it reads (in your case, the x-terminal-emulator line is your important part to add),

xrdb $HOME/.Xresources  xsetroot -solid grey  x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &  gnome-session &  


Solution:2

So, we found out that the xstartup file needs executable permission, which were not set in this machine's configuration. Contrary to other machine, this time I created a new file and typed the contents in instead of just copying a file from another machine, so by default it did not have exe permissions.

> chmod a+x ~/.vnc/xstartup


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