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[doc] install_libvirt: SPICE is now used only as a fallback server and for USB audio

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Jonathan Rubenstein
2026-10-26 18:36:00 +02:00
committed by Geoffrey McRae
parent f8d73a9c1b
commit a426c99d6a
1 changed files with 9 additions and 25 deletions
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doc/install_libvirt.rst
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@@ -88,40 +88,24 @@ Looking Glass to use your GPUs DMA engine to transfer the frame data.
.. _libvirt_spice_server:
Keyboard/mouse/display/audio
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
SPICE fallback server
^^^^^^^^^^^^^^^^^^^^^
The IDD provides the primary video, keyboard and mouse paths directly over
LGMP. SPICE is optional, but is recommended for display fallback, clipboard
and audio services.
The Looking Glass client also supports SPICE for video, audio, and input if
there is a problem with the Looking Glass IDD. However, this is no faster than
other SPICE clients like virt-viewer, and should not normally be used.
.. note::
The current client owns its SPICE connection and service settings. The
canonical options are ``spice:enable``, ``spice:input``,
``spice:clipboard``, ``spice:audio`` and ``spice:usbAudio``.
Keep a ``<graphics type='spice'>`` device if you want these services. For a
usable display fallback, set the VM's ``<video>`` model to ``vga``.
The SPICE server is required for the USB audio device, as it uses
SPICE USB redirection channels.
The direct IDD input path supports absolute desktop positioning, relative
capture-mode input, keyboards, media keys and extended mouse buttons. SPICE
fallback uses the VM's default PS/2 keyboard and mouse. Looking Glass does not
require additional virtio keyboard, mouse or tablet devices for either path.
See :ref:`client_usb_audio` for more information.
For classic SPICE audio, add a standard Intel HDA audio device:
To enable SPICE support, add a SPICE graphics server to your virtual machine:
.. code:: xml
<sound model='ich9'>
<audio id='1'/>
</sound>
<audio id='1' type='spice'/>
The recommended emulated USB audio path does not need this HDA device. It
requires a SPICE USB channel and is covered in :ref:`client_usb_audio`. For
clipboard synchronization, continue with
:ref:`libvirt_clipboard_synchronization`.
.. _libvirt_clipboard_synchronization:
Clipboard synchronization