Re: [Xen-users] Cannot access to PV domU via VNC

[Jeongseok Son <invictusjs@xxxxxxxxx>]

Thank you so much. I did a stupid mistake. Now I set the vnclisten
option as 0.0.0.0 then I can connect to it.

However, I could only see a black screen on VNC client so I tried to
install x window system.

apt-get install x-window-system

And then I ran "startx" command but I got this error message.

(EE) open /dev/fb0: No such file or directory
(EE) No devices detected.

Fatal server error:
no screens found

Why frame buffer device is not enabled in PV domU? Ho can solve this issue?

On Thu, Feb 27, 2014 at 11:44 PM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> On Wed, Feb 26, 2014 at 11:47:39PM +0900, Jeongseok Son wrote:
>> Hello, I have to use graphical interface in PV domU so I tried to
>> connect to domU via VNC.
>>
>> I'm currently using Xen Hypervisor 4.3.1. I installed Ubuntu Lucid
>> (10.04) PV domU with xen-create-image. I can use hvc0 console of domU
>> (with xl console command) but cannot connect to VNC console.
>>
>> The following is my xen configuration for PV domU.
>>
>> # Kernel + memory size
>> kernel = '/boot/vmlinuz-3.9.4+'
>> ramdisk = '/boot/initrd.img-3.9.4+'
>>
>> vcpus       = '2'
>> memory      = '2048'
>>
>> # Disk device(s)
>> root        = '/dev/xvda2 ro'
>> disk        = [
>>                   'file:/path/to/disk.img,xvda2,w',
>>                   'file:/path/to/swap.img,xvda1,w',
>>                  ]
>>
>> #  Hostname
>> name        = 'pv-ubuntu'
>>
>> # vfb
>> vfb         = [ "vnc=1, vncpasswd='', vncdisplay=1" ]
>>
>> #  Behaviour
>> on_poweroff = 'destroy'
>> on_reboot   = 'restart'
>> on_crash    = 'restart'
>>
>> With netstat -a command, the following line is printed so I think Xen
>> listens the connections.
>>
>> Proto Recv-Q Send-Q Local Address           Foreign Address         State
>> tcp        0         0        localhost:5901          *:*
>>                 LISTEN
>>
>
> That's because your vnc is listening on 127.0.0.1 only.
>
> Please have a look at xl manpage for the "vnclisten" option.
>
> Wei.
>
>> But when I attempt to connect to it using VNC client, I got
>> "Connection to host xxx.xxx.xxx.xxx::5901 was closed." message.
>>
>> I successfully worked with GUI Interface via VNC in HVM domU (Both
>> Ubuntu 12.04 Desktop and Server).
>> Why it doesn't work in PV domU? Are there anything to set up in PV
>> domU to make it work?
>> I really appreciate any help you can provide.
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxx
>> http://lists.xen.org/xen-users

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