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[doc] faq: Touchup

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This commit is contained in:
Jonathan Rubenstein
2026-11-05 19:34:07 +02:00
committed by Geoffrey McRae
parent f15d1bde4b
commit 8c13203b8d
1 changed files with 28 additions and 19 deletions
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47
doc/faq.rst
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@@ -1,6 +1,10 @@
.. _frequently_asked_questions:
Frequently asked questions
##########################
.. _faq_general:
General
-------
@@ -47,7 +51,7 @@ Is a passed-through GPU required?
No. The IDD can create an SDR display using software processing when it cannot
use a Windows render adapter. A hardware adapter is strongly recommended for
lower latency, higher refresh rates, HDR, and cadence scheduling. However,
lower latency, higher refresh rates, HDR, and cadence scheduling; however,
software rendering is sufficient for less demanding applications, such as
basic word processing or spreadsheets.
@@ -55,7 +59,7 @@ The Linux client still needs an EGL-capable host graphics driver. Direct
DMA-BUF import depends on the host GPU and driver; the client falls back to a
copy when it is unavailable.
.. _why_do_i_need_spice_if_i_dont_want_a_spice_display_device:
.. _do_i_need_spice:
Do I need SPICE?
~~~~~~~~~~~~~~~~
@@ -68,7 +72,7 @@ Set ``spice:enable=no`` or use ``-s`` to disable SPICE completely. Disable an
individual service with ``spice:input``, ``spice:clipboard`` or
``spice:audio`` instead when the other services are still wanted.
.. _where_is_the_host_application_for_linux:
.. _which_app_runs_on_linux:
Which application runs on Linux?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -77,6 +81,8 @@ The Looking Glass Client runs on the Linux host operating system. The IDD runs
inside the Windows guest. The older product named the **Host Application** is a
legacy Windows server; “Host” in that name does not mean the Linux host OS.
.. _faq_input_and_window_system:
Input and window system
-----------------------
@@ -107,7 +113,7 @@ mouse acceleration can change its feel or cause temporary position error.
Use the direct IDD input path when available. For a game, use capture mode and
consider ``input:rawMouse=yes``.
.. _the_cursor_position_doesnt_update_until_i_click:
.. _should_i_add_a_tablet_device:
Should I add a virtual tablet?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -116,6 +122,8 @@ No. Looking Glass does not require an additional virtio tablet, mouse or
keyboard. Direct IDD input provides its own absolute and relative devices, and
SPICE fallback uses the VM's default PS/2 input devices.
.. _faq_audio:
Audio
-----
@@ -125,8 +133,9 @@ Does Looking Glass support microphone input and surround sound?
Yes. The recommended emulated USB Audio 2.0 device provides stereo,
quadraphonic, 5.1 and 7.1 playback plus stereo recording at rates up to
192 kHz. Classic SPICE audio also provides playback and recording. Client
microphone recording currently requires the PipeWire backend. See
:doc:`audio`.
microphone recording currently requires the PipeWire backend. See :doc:`audio`.
.. _faq_host:
Legacy Host Application
-----------------------
@@ -134,16 +143,16 @@ Legacy Host Application
The sections below apply only to the legacy Windows Host Application. New
installations should use the IDD. See :ref:`legacy_host_policy`.
.. _faq_host:
.. _faq_host_log:
Where is the legacy Host log?
Where is the legacy host log?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The application log is:
The application log is found at:
``%ProgramData%\Looking Glass (host)\looking-glass-host.txt``
The service log is:
The service log is found at:
``%ProgramData%\Looking Glass (host)\looking-glass-host-service.txt``
@@ -154,7 +163,7 @@ Why does the legacy Host require administrator privileges?
The legacy capture APIs use privileged functions for GPU scheduling, NvFBC
setup and secure-desktop capture. The installer runs it as a Windows service
under the SYSTEM account. This is not how the current IDD is configured.
under the SYSTEM account. This is not how the IDD is configured.
.. _nvfbc_nvidia_capture_api_doesnt_work:
@@ -162,7 +171,7 @@ Why does NvFBC not work?
~~~~~~~~~~~~~~~~~~~~~~~~
NvFBC is a legacy Host capture method and requires supported NVIDIA hardware
and SDK licensing. It is not part of the IDD path.
and SDK licensing. The IDD does not support it.
.. _the_screen_stops_updating_when_left_idle_for_a_time:
@@ -170,17 +179,17 @@ Why does a legacy captured display stop when idle?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Windows may turn off the physical or dummy display captured by the legacy
Host. Disable display sleep for that monitor. The IDD virtual-monitor path does
not require a physical display.
Host. Disable display sleep for that monitor. The IDD virtual monitor does not
require a physical display.
.. _a_note_about_ivshmem_and_scream_audio:
Can Scream and Looking Glass share IVSHMEM?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Can Scream and Looking Glass share an IVSHMEM device?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Do not use Scream with Looking Glass. Use the built-in classic SPICE or USB
audio path instead. In particular, Scream's IVSHMEM transport can select or
interfere with the shared device used for Looking Glass frames.
Scream and Looking Glass should not be used at the same time, use the built-in
classic SPICE or USB audio path instead. In particular, Scream's IVSHMEM
transport can select or interfere with the shared device used by Looking Glass.
Technical details
-----------------