Error creating Virtual machines on ROME (libvirt, virt-manager)

Support
1

Hello,

Requirements:

I have Searched the forum for my issue and found nothing related or helpful
I have checked the Resources category (Resources Index)
I have reviewed the Wiki for relevant information
I have read the the Release Notes and Errata

OpenMandriva Lx version:
ROME (iso 4172) with full updates

Desktop environment (KDE, LXQT…):
KDE

I was trying to help someone create a vm with virt-manager. We kept getting errors that stopped the vm creation.

Impossibile completare l'installazione: 'internal error: QEMU unexpectedly closed the monitor (vm='freebsd14.0'): 2026-01-02T18:03:05.176421Z qemu-system-x86_64: -chardev spicevmc,id=charchannel0,name=vdagent: 'spicevmc' is not a valid char driver name'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 71, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/createvm.py", line 2008, in _do_async_install
    installer.start_install(guest, meter=meter)
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 726, in start_install
    domain = self._create_guest(
             ^^^^^^^^^^^^^^^^^^^
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 667, in _create_guest
    domain = self.conn.createXML(initial_xml or final_xml, 0)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.11/site-packages/libvirt.py", line 4545, in createXML
    raise libvirtError('virDomainCreateXML() failed')
libvirt.libvirtError: internal error: QEMU unexpectedly closed the monitor (vm='freebsd14.0'): 2026-01-02T18:03:05.176421Z qemu-system-x86_64: -chardev spicevmc,id=charchannel0,name=vdagent: 'spicevmc' is not a valid char driver name

Everything I could find was that they were permission based. But we couldn’t get around them.

Finally I decided to try in the ROCK install on my testbench. Went back to the clean install and system updates.

Did the full monty kvm/qemu/libvirt install:

dnf --refresh install --assumeyes qemu qemu-system-x86 qemu-img qemu-kvm ovmf virt-manager libvirt-utils lib64virt-devel qemu-device-usb qemu-user-binfmt iproute2 iproute2-doc iproute2-tc spice-protocol virtiofsd

I already had firewalld installed (yes, you need a firewall installed or else libvirt won’t work).

Is that overkill? Yes. But it has worked everytime on every distro (adjusting for package names) I’ve used.

Set the groups up; changed libvirtd.conf . . .and on ROCK it was FLAWLESS. Textbook example of creating a (freedos in this case) vm using virt-manager.

But not on Rome.

What am I forgetting?

2

To format your output so it’s in English. :wink:

3

LC_ALL=C <command> <options> then post output.

Unless somewhere in Unix/Linux they changed that…

4

:face_with_bags_under_eyes:

So rather than deleting the first 3 words… I just attempted again on my Rome testbench, copied the error to a thumb drive so I could get it to my main desktop, and…

Unable to complete install: 'internal error: process exited while connecting to monitor: 2026-01-04T18:25:43.965597Z qemu-system-x86_64: -chardev spicevmc,id=charchannel0,name=vdagent: 'spicevmc' is not a valid char driver name'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 71, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/createvm.py", line 2008, in _do_async_install
    installer.start_install(guest, meter=meter)
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 726, in start_install
    domain = self._create_guest(
             ^^^^^^^^^^^^^^^^^^^
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 667, in _create_guest
    domain = self.conn.createXML(initial_xml or final_xml, 0)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.11/site-packages/libvirt.py", line 4545, in createXML
    raise libvirtError('virDomainCreateXML() failed')
libvirt.libvirtError: internal error: process exited while connecting to monitor: 2026-01-04T18:25:43.965597Z qemu-system-x86_64: -chardev spicevmc,id=charchannel0,name=vdagent: 'spicevmc' is not a valid char driver name

It’s got to be some dumb permission error somewhere

PS: Thanks @ben79 . I forgot about that command
Oh and @zeroability : pfffft :blueberries: :squinting_face_with_tongue:

1 Like
5

Make sure the spice driver is installed.

1 Like
6

Son-of-a… :face_with_symbols_on_mouth:

That was it

banging-head-against-keyboard

My patented full monty qemu install was missing:

qemu-char-spice
qemu-ui-spice-app

Both of which are on the ROCK installs

Thanks @zeroability

7

If the issues is about installing or using virt-manager would there perhaps be a missing dependency or two for that?

8

There might be. I’m going to be doing additional testing this afternoon on it. I’ll be going through both rock and rome on my bench (I saved partition images before I installed anything) to see what’s up

So I’ll report back here later today

9

@ben79

OK, so I did an “install” and here are the results.

On Rock those 2 spice packages are installed with qemu-kvm and qemu-system-x86

On Rome, those packages are not installed at all.

So if we just change the dependencies we should be good.