[virt-tools-list] virt-manager vnc blank console

[Cole Robinson]

On 07/30/2015 08:13 AM, Fabio Coatti wrote:
> Hi all,
> 
> I'm facing a long-standing issue that I wasn't able to debug, whatever forum
> or log I tried to read, so I'm asking here for some help.
> 
>  
> 
> Short description:
> 
> when I use virt-manager to connect to a remote kvm host (qemu+ssh), all works
> just fine except the console screen of a vm, that is always black. This
> happens with different versions of libvirt/kvm/virt-manager.
> 
>  
> 
> More symptoms:
> 
> - the vnc screen when it opens up, shows for few seconds scrolling controls,
> but then only a black window
> 
> - using different clients the behavior is quite different. Basically,
> connecting with standard ubuntu/debian/rh client (from 0.9 to 1.2) works
> 
> - on faulty client, same client version(s), so from 0.9 to 1.2) the vnc screen
> is blank.
> 
> - not working clients are compiled from source (gentoo based)
> 
> - vnc by itself otherwise works (creating a tunnel and connecting to virtual
> machine vnc port)
> 
>  
> 
> Basically what it would be useful for me is some hint about how to debug this
> issue. I don't know if this can be related to some lib used by virt-manager,
> tunnel issue or whatever. Of course, if someone has already seen this issue
> and solved it it would be great, but I will be more than happy with
> suggestions on how to debug this issue.
> 
>  
> 
>  
> 
> Of course I can provide more information.
> 
>  
> 
> Many thanks in advance.

Hi, thanks for the report. Please provide the full virt-manager --debug output
when reproducing the issue and we can go from there

Thanks,
Cole