Unity on the Ubuntu VM

[MD I. Islam]

Hi

I want to install Unity on the Ubuntu VMs in GENI. Could you please advise me how can I do it and how I can access the desktop?

I executed the command to install Unity (through SSH):

sudo apt-get update

sudo apt-get upgrade

sudo apt-get install ubuntu-desktop

Then I tried to install VNC server and tried to view it from VNC Viewer, but it didn't work. Could you please advise me how I can get desktop environment on GENI. I am doing an experiment on video, so I need to desktop environment.

Many thanks

Tamim

[Sarah Edwards]

Hi Tamim,

Does this HowTo page on "Viewing Client Video on Your Local Machine" do what you are looking for?

http://groups.geni.net/geni/wiki/HowTo/ForwardVideoOverSSH

Cheers,
Sarah

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Sarah Edwards
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[MD I. Islam]

Hi Sarah

I have a P2P video streaming app in each node. Each application will download videos from other peers and will be playing it. It seems like those tunneling approach won't work here, will it? It seems like we need to install a windowing system (Unity for Ubuntu) and then we can watch our app by a remote desktop application (such as VNC). Could you please advise me how I can achieve that? Looking forward to your advise. 

Thanks

Tamim

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[Sarah Edwards]

Hi Tamim,

I think this past thread covers a similar example to what you are trying to do.  In that case they decided to tunnel VNC over SSH (perhaps using a public IP and a high numbered port):

https://groups.google.com/forum/#!searchin/geni-users/vnc/geni-users/zLW7h8eFiYY/jCewyjruixcJ

Could you read through this thread and let us know if that helps?

Do you need help installing Unity?  Or getting VNC setup to work correctly?

Thanks,

Sarah

[MD I. Islam]

Hi Sarah

Yeah, this link seems to be exactly what I am looking for. I also need help setting up Unity and VNC correctly. I executed the following commands on the VM. But it doesn't seem to be working. 

#Install Unity on Ubuntu

sudo apt-get -y update

sudo apt-get -y upgrade

sudo apt-get -y install ubuntu-desktop

#install X11

sudo apt-get -y install xorg openbox

After executing the command, I logged in again using Putty (enabling the X11 forwarding option), but I don't see any UI. I also installed VLC on the VM (sudo apt-get -y install vlc browser-plugin-vlc). But when I try to play a video, I see the error "inhibit interface error: Failed to connect to the D-Bus session daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11". It seems like the Unity and X11 are not installed properly. 

Could you please advise me to get over this?

Thanks

Tamim

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[MD I. Islam]

Hi Sarah

I have been able to see the video over X11 forwarding, but it's very slow. I executed following script, then I could see the video on Putty and Xming.

sudo sh -c "echo 'ForwardAgent yes' >> /etc/ssh/ssh_config"

sudo sh -c "echo 'ForwardX11 yes' >> /etc/ssh/ssh_config"

sudo sh -c "echo 'ForwardX11Trusted yes' >> /etc/ssh/ssh_config"

sudo sh -c "echo 'X11Forwarding yes' >> /etc/ssh/sshd_config" 

Now I have to setup VNC over SSH tunnel. Could you please advise how I can do that?

Many thanks

Tamim

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