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Re: This QEMU does not support vmvga?

From: Thomas Huth
Subject: Re: This QEMU does not support vmvga?
Date: Tue, 13 Jul 2021 09:12:17 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0

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.

       <model type='vmvga' vram='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>

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?


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