[CentOS-virt] Open graphics connection with virt-manager problem

Thu Jun 5 11:13:29 UTC 2014
George Dunlap <dunlapg at umich.edu>

On Thu, Jun 5, 2014 at 10:18 AM, jaumotte, styve <s.jaumotte at cg49.fr> wrote:
> Hi,
> Actually, we study virtualization on CentOS with Xen, our goal is to test if the migration of Xen with SLES 11 to CentsOS.
> Our first tests are ok except for one problem and I don't find any solutions on the net. I hope, you can help me.
> The problem is that I can't connect to my vm desktop with Virt-Viewer. I follow the installation guide available for centos :
> http://wiki.centos.org/HowTos/Xen/Xen4QuickStart and http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt
> My CentOS is a fresh new install 6.5 with xen 4.2 and X11.
> >From Dom0, when I launch virt-manager, everything is ok. I can create a new vm and the first time I connect to the virtual graphics without any problems. But, if I close the desktop VM, I can't access anymore to the virtual desktop of the VM, it is as if the graphics is freazing.The VM is still alive. What is very strange is that I can connect directly with vnc client on :5900 port. I try to launch virt-manager with " --debug " option, but don't find any interesting errors.
> I've got the same problem if I remotely launch a virt-manager and connect with xen+ssh from another centos 6.5.
> But, I can still connect from a virt-manger launched from a Rh7RC or even from a SLES 11.3.
> I think it becomes from virt-manager or libvirt which come with centos 6.5. I made update and I don't know what's wrong with my CentOS 6.5. Don't find any problems like this with Google !

Hmm, I wonder if it's related to this one:


Although since this hasn't even been accepted into upstream libvirt,
AFAICT, it's strange that it works with RH7RC and SLES.

Can you tell what port virt-manager is trying to connect to?