[libvirt-users] no drm render nodes available

[Erik Skultety]

On Thu, Dec 06, 2018 at 05:55:54AM -0800, Michael Taboada wrote:
> Hi,
> Yes. Qemu is version 3.0.0-4, and output is below:
>
> ls -l /dev/dri:
>
> total 0
> drwxr-xr-x 2 root root      60 Nov 28 16:46 by-path
> crw-rw---- 1 root video 226, 0 Nov 28 16:46 card0
>
> domain xml is attached.
> -Michael.

[Putting libvirt-users back on CC]

Yep, this is a pretty serious fail on my account, the code assumes SPICE needs
a DRM render node every time one isn't defined within the XML due to a missing
check for presence of the <gl> element.

I stripped the XML you sent me to the bare minimum to demonstrate a reproducer:

...
    <graphics type='spice' autoport='yes'>
      <listen type='address'/>
      <image compression='off'/>
    </graphics>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
...

Let me know whether you want to create a BZ/fix the bug/both otherwise I'll
take care of everything and mention you in the commit message.

Thanks,
Erik