[Xen-users] problems connecting to HVM guest OS via VNC Viewer

[Jane Wayne <jane.wayne2978@xxxxxxxxx>]

i am following the instructions at
https://help.ubuntu.com/community/XenProposed to install Xen + Ubuntu.
i have already installed successfully a PV guest OS (Ubuntu Server
12.04). now i am trying to install a HVM guest OS (Ubuntu Desktop
12.04). however, i cannot seem to connect to the instance after i
start it up. the HVM configuration file looks like the following.

builder = "hvm"
name = "ubuntu-hvm"
memory = 512
vcpus = 1
vif = [' ']
disk = 
['phy:/dev/xenub/ubuntu-hvm,hda,w','file:/home/jwane/ubuntu-12.04-desktop-amd64.iso,hdc:cdrom,r']
vnc = 1
boot = "d"

i start the HVM guest os with the following command

sudo xm create ubuntu-hvm.cfg

to make sure the HVM guest os is running, i type in the following command

sudo xm list

and i get the following output

Name         ID Mem   VCPUs State Time(s)
Domain-0    0  22622  8          r-----  63.9
ubuntu-hvm 1  512      1          -b----  2489.2

on my windows box, i download vnc viewer, and try to connect to my
Dom0 at 192.168.0.201, but i get the following message

unable to connect to host: Connection refused (10061)

so, as a sanity check, on the Dom0 console, i try to ping as follows.

ping localhost
ping 127.0.0.1
ping 192.168.0.201

all pings were successful. so next, i try to telnet as follows.

telnet localhost 5900
telnet 127.0.0.1 5900
telnet 192.168.0.201 5900

the telnet to the LAN IP does not work. i get: telnet: Unable to
connect to remote host: Connection refused. the telnet to localhost
and 127.0.0.1 works.

so, for some reason, port 5900 is not working on the LAN IP
(192.168.0.201). if i can't get to the IP and port from Dom0, i sure
won't be able to get to that IP and port from another location.

i also did another sanity check to make sure the port is opened.

sudo netstat -tcp --listening --programs

and my results are as follows.

Proto Recv-Q Send-Q Local_Address           Foreign_Address State
PID/Program_name
tcp    0          0          localhost:5900            *:*
         LISTEN   2097/qemu-dm
tcp    0          0          192.168.122.1:domain *:*
    LISTEN   5653/dnsmasq
tcp    0          0          *:ssh                         *:*
             LISTEN    1198/sshd
tcp    0          0          [::]:ssh                      [::]:*
              LISTEN   1198/sshd

my questions are:
1. why can't i connect to the LAP IP and port 5900 from Dom0 and
another location using telnet or VNC?
2. i also tried to connect using "sudo gvncviewer localhost:0" and
"sudo gvncviewer localhost:5900" from Dom0, but get "Cannot open
display". are there missing dependencies?

any help is appreciated.

thanks.

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