[libvirt-users] VM display is blank when open (but Gnome Boxes thumbnails ok)

Michel Rozpendowski mro at osimis.io
Mon May 13 17:33:39 UTC 2019

On Mon, May 13, 2019 at 5:26 PM Martin Kletzander <mkletzan at redhat.com>

> On Mon, May 13, 2019 at 04:40:55PM +0200, Michel Rozpendowski wrote:
> >Hi,
> >
> >I also posted this question on the IRC #virt channel but have not received
> >any reaction at the moment of posting this message to the mailing list.
> >
> >Since I last turned off my laptop (Dell XPS-15-9570 running Ubuntu 19.04)
> >on Friday 10 May (I had to do it by long power press by the way), I am no
> >longer able to get the display of my VMs: I am getting a black screen,
> even
> >though I can see it running in the thumbnail of Gnome Boxes.
> >You can see the described behaviour on the following video capture:
> >https://youtu.be/Lv67g0foyzc.
> >Troubleshooting Log from Gnome Boxes is available here:
> >https://pastebin.com/9eWGYsJV.
> >It was working all properly on Friday before I turn off my laptop.
> >
> >Any clue what could be wrong and how I could solve this issue (I digged
> the
> >Internet for 2 hours without success)?
> >
> >Thanks in advance for your help!
> >
> Well, sorry, I don't really know what might've caused it, but it looks all
> kind
> of OK from a libvirt standpoint, so my best guess would be something
> related to
> the virtio graphics.  But the I saw you are turning off that VM, so I'm
> guessing
> it happens even after starting the VM back, right?  Still, might be worth
> asking
> on qemu mailing lists if nobody on this list will know.

Thanks! Great advice about qemu. I digged into that direction and found
following post (
where setting the the video model to QLX and the display type to SPICE
fixed the issue.
It worked for me!

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