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Virtual Machine Manager has no multi monitor options.


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#1 Mr_MaGee

Mr_MaGee

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Posted 24 November 2025 - 09:56 PM

Host: Pika OS KDE

Guest: Win 11 Pro

Virtualization Software: Virtual Machine manager (VMM)

 

Need help getting multi monitor function to work. 

 

What I've tried with no success:

 

1. Enabled XML editing in VMM.

2. Launched target vm > view > details > Video QXL > changed the "heads" value from 1 to 2. 

3. Rebooted VM.

 

1. Launched target vm > view > details > Tried all the differernt video models. 

 

1. Navigate to target vm > view > details > Display Spice > changed Spice Server Type to VNC server but it returned with: “Error changing VM config: unsupported config : chardev ‘spicevmc’ not supported without spice graphics.

Full error message: 

Traceback (most recent call last):

File "/app/share/virt-manager/virtManager/addhardware.py", line 387, in change_config_helper

define_func(devobj=devobj, do_hotplug=False, **define_args)

File "/app/share/virt-manager/virtManager/object/domain.py", line 902, in define_graphics

self._process_device_define(editdev, xmlobj, do_hotplug)

File "/app/share/virt-manager/virtManager/object/domain.py", line 509, in _process_device_define

self._redefine_xmlobj(xmlobj)

File "/app/share/virt-manager/virtManager/object/libvirtobject.py", line 388, in _redefine_xmlobj

self._redefine_xml_internal(origxml, newxml)

File "/app/share/virt-manager/virtManager/object/libvirtobject.py", line 371, in _redefine_xml_internal

self._define(newxml)

File "/app/share/virt-manager/virtManager/object/domain.py", line 1158, in _define

self.conn.define_domain(xml)

File "/app/share/virt-manager/virtManager/connection.py", line 548, in define_domain

return self._backend.defineXML(xml)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/app/lib/python3.12/site-packages/libvirt.py", line 4608, in defineXML

raise libvirtError('virDomainDefineXML() failed')

libvirt.libvirtError: unsupported configuration: chardev 'spicevmc' not supported without spice graphics

 

1. I also followed a Youtube video that showed how Remote Viewer has multi monitor capabilities. I installed and used remote viewer but that too didn't provide any options to add additional displays. 

 

At a loss here. I'm hopoing someone knows how to get multi monitors set up for VMM.



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