VNC : Console does not accept any keyboard/mouse inputs

Question

I have used and configured vnc many a times before but facing this strange issue for the first time. Here are my steps of configuring vnc on Amazon (RHEL 6.2 64-bit, AMI: ami-2fd5441f):

Server Configuraion

• Install desktop packages: # yum -y groupinstall "Desktop" "X Window System"
• Install vnc server: # yum -y install tigervnc-server.x86_64 libXfont.x86_64
• Start vncserver: # vncserver
• Enable vncserver to start after the reboot: # chkconfig vncserver on
• Either stop iptables or configure them accordingly: # service iptables stop and # chkconfig iptables off
• append below two lines to /etc/sysconfig/vncservers:

VNCSERVERS="2:ec2-user" and VNCSERVERARGS[2]="-geometry 1280x1024 -nolisten tcp -localhost"

• append below line to ~/.vnc/xstartup (this would be ec2-user's home directory): exec gnome-session
• Reboot the server: # reboot

Windows client (laptop) configuration

• Install vnc viewer on windows laptop
• Connect with below string: hostname_of_server:5901
  • Also, EC2 security groups are configured accordingly for VNC access.

Now, when I connect using windows vnc client, I get the successfull connection but I get below window where nothing is clickable:

I have also checked below settings on my vnc client which will allow keyboard/mouse inputs:

QUESTION: I have never faced this issue before where the VNC console is "NOT CLICKABLE" And I am not able to figure what am I doing wrong. Could you help?

Thanks.

UPDATE

I tried connecting using gtkvncviewr installed on ubuntu and the results were exactly the same. I get the window but nothing is clickable.

ANSWER:

After spending almost a week freaking out on this issue, I solved it myself. The solution was to update libX11. I ran below yum command and things are flying now.

yum install libX11

Solution

After spending almost a week freaking out on this issue, I solved it myself. The solution was to update libX11. I ran below yum command and things are flying now.

yum install libX11

Comments

[Robin Green]

Scroll the window downwards and rightwards. Is there some kind of modal dialog there?

[slayedbylucifer]

No, there is none. I tried from different laptop too, but it is the same behavior.

[brasofilo]

Slayed, can you please add the solution as an Answer?