Re: This QEMU does not support vmvga?

[Thomas Huth]

On 03/07/2021 02.21, Jacob Green wrote:
>      Hello, so to elaborate on the subject, I am trying to understand why I 
> cannot select the vmvga device and start my VM, I am running CentOS7 with 
> extras enabled, and the QEMU version is
> "# /usr/libexec/qemu-kvm --version
> QEMU emulator version 2.12.0 (qemu-kvm-ev-2.12.0-44.1.el7_8.1)"
> My domain configuration for video is as follows and virsh edit seems to like it.
>
>      <video>
>        <model type='vmvga' vram='16384' heads='1' primary='yes'/>
>        <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 
> function='0x0'/>
>      </video>
>
> The error message I receive when starting the VM is below.
>
> "virsh start mydomain
> error: Failed to start domain mydomain
> error: unsupported configuration: this QEMU does not support 'vmvga' video 
> device"
>
> So I guess I'll start with the obvious, is the QEMU version too old? I 
> thought vmvga support was added in like 0.10 or something.

The "qemu-kvm" from the "qemu-kvm-ev" package has many devices disabled 
which are rather badly maintained and thus could be a security risk in 
serious virtualization environments.

But why do you need "vmvga" at all? Can't you use one of the other available 
VGA cards like stdvga instead?

 Thomas